Scientific director

Prof. Dr. Anja Bräuer

Tel. +49 441 798 3797

Deputy scientific director

Apl. Prof. Dr. Karin Dedek

Tel. +49 441 798 3425

Technical director

Dr. Petra Bolte

Tel. +49 441 798 3478

Technical Supervisor, Scientific Consultant

Dr. Levent Gütay

Tel. +49 441 798 3927 or 798 3797

We appreciate your use of our facility and ask you to acknowledge the Fluorescence Microscopy Service Unit in all publications derived through the use of the facility or collaborations with the facility's staff. 

For example: "The author(s) acknowledge the Fluorescence Microscopy Service Unit, Carl von Ossietzky University of Oldenburg,  for the use of the imaging facilities". Assisted acquisition, beyond initial training, should result by agreement in co-authorship by persons responsible for the work in addition to an acknowledgement statement (see above).

Please also notify us whenever you publish papers containing imaging data taken at the Fluorescence Microscopy Service Unit, we will update our publication list. 



  1. Steenken, F., Bovee, S., Köppl, C. Immunolabeling and Counting Ribbon Synapses in Young Adult and Aged Gerbil Cochleae. J. Vis. Exp. (182), e63874, doi:10.3791/63874 (2022)


    Görtemaker K, Yee C, Bartölke R, Behrmann H, Voß JO, Schmidt J, Xu J, Solovyeva V, Leberecht B, Behrmann E, Mouritsen H, Koch KW.  Direct Interaction of Avian Cryptochrome 4 with a Cone Specific G-Protein. Cells 11(13):2043. doi: 10.3390/cells11132043 (2022).

  3. Chetverikova, Raisa; Dautaj, Glen; Schwigon, Leonard; Dedek, Karin; Mouritsen, Henrik. Double cones in the avian retina form an oriented mosaic which might facilitate magnetoreception and/or polarized light sensing. J. R. Soc. Interface 19: 20210877. (2022)

  4. Gross I., Brandt N., Vonk D., Köper F., Wöhlbrand L., Rabus R., Witt M., Heep A., Plösch T., Hipp M.S., Bräuer A.U. Plasticity-Related Gene 5 Is Expressed in a Late Phase of Neurodifferentiation After Neuronal Cell-Fate Determination. Front. Cell. Neurosci., (2022)

  5. Haase K, Musielak I, Warmuth-Moles L, Leberecht B, Zolotareva A, Mouritsen H, Heyers D. In Search for the Avian Trigeminal Magnetic Sensor: Distribution of Peripheral and Central Terminals of Ophthalmic Sensory Neurons in the Night-Migratory Eurasian Blackcap (Sylvia atricapilla). Front. Neuroanat. 16:853401. doi: 10.3389/fnana.2022.853401. (2022)


  1. Isabel Gross, Tabea Tschigor, Angelina L. Salman, Fan Yang, Jiankai Luo, Danara Vonk, Mark S. Hipp, John Neidhardt, Anja U. Bräuer, Systematic expression analysis of plasticity-related genes in mouse brain development brings PRG4 into play. Developmental Dynamics.  1–15 (2021) with the cover.

  2. Angelika Einwich, Pranav Kumar Seth, Rabea Bartölke, Petra Bolte, Regina Feederle, Karin Dedek and  Henrik Mouritsen. Localisation of cryptochrome 2 in the avian retina. Journal of Comparative Physiology A.  (2021)

  3. Steenken F, Heeringa AN, Beutelmann R, Zhang L, Bovee S, Klump GM, Köppl C.  Age-related decline in cochlear ribbon synapses and its relation to different metrics of auditory-nerve activity. Neurobiol Aging: in press. DOI: 10.1016/j.neurobiolaging.2021.08.019 (2021)

  4. Caus Capdevila MQ, Sienknecht UJ, Köppl C. Developmental maturation of presynaptic ribbon numbers in chicken basilar-papilla hair cells and its perturbation by long-term overexpression of Wnt9a. Dev Neurobiol.  (2021)

  5. Nicole Ahrens, Dana Elbers, Helena Greb, Ulrike Janssen-Bienhold, Karl-Wilhelm Koch. Interaction of G protein-coupled receptor kinases and recoverin isoforms is determined by localization in zebrafish photoreceptors. BBA - Molecular Cell Research 1868 118946 (2021)

  6. Nicole AhrensEnno AeissenAnka LippeUlrike Janssen-Bienhold, Jens Christoffers, Karl-Wilhelm KochFarnesylation of Zebrafish G-Protein-Coupled Receptor Kinase Using Bio-orthogonal Labeling. ACS Chem. Neurosci. 12, 10, 1824–1832 (2021)

  7. P. Bolte, A. Einwich, P. K. Seth, R. Chetverikova, D. Heyers, I. Wojahn, U. Janssen-Bienhold, R. Feederle, P. J. Hore, K. Dedek and H. Mouritsen. Cryptochrome 1a localisation in light- and dark-adapted retinae of several migratory and non-migratory bird species: no signs of light-dependent activation. Ethol. Ecol. Evol.,  33:3, 248-272, DOI: 10.1080/03949370.2020.1870571 (2021)

  8. Krohs C, Körber C, Ebbers E, Altaf F, Hollje G, Hoppe S, Dörflinger Y, Prosser HM, Nothwang HG. Loss of miR-183/96 alters synaptic strength via pre- and postsynaptic mechanisms at a central synapse. J. Neurosci, JN-RM-0139-20. doi: 10.1523/JNEUROSCI.0139-20.2021 (2021)

  9. Schinzel F, Ebbers L, Nothwang HG. The Lbx1 lineage differentially contributes to inhibitory cell types of the dorsal cochlear nucleus, a cerebellum like structure, and the cerebellum. J Comp Neurol., 529:3032-3045 (2021).

  10. Nemitz L, Dedek K, Janssen-Bienhold U. Synaptic Remodeling in the Cone Pathway After Early Postnatal Horizontal Cell Ablation. Front Cell Neurosci. 15:657594. doi: 10.3389/fncel.2021.657594 (2021)

  11. Silke Haverkamp, László Albert, Vaishnavi Balaji, Pavel Němec, Karin Dedek. Expression of cell markers and transcription factors in the avian retina compared with that in the marmoset retina. J Comp Neurol. 529: 3171-3193 (2021).


  1. Gläser A, Hammerl F, Gräler MH, Coldewey SM, Völkner C, Frech MJ, Yang F, Luo J, Tönnies E, von Bohlen und Halbach O, Brandt N, Heimes D, Neßlauer AM, Korenke GC, Owczarek-Lipska M, Neidhardt J, Rolfs A, Wree A, Witt M, Bräuer AU. Identificationof Brain-Specific Treatment Effects in NPC1 Disease by Focusing on Cellular and Molecular Changes of Sphingosine-1-Phosphate Metabolism. Int. J. Mol. Sci. 2020, Jun 24;21(12)

  2. Janach G.; Reetz O.; Döhne N.; Stadler K.; Grosser S.; Byvaltsev E., Bräuer AU; Strauss U.. Interferon-γ acutely augments inhibition of neocortical layer 5 pyramidal neurons, J Neuroinflammation, 2020 Feb 22;17(1):69

  3. C. Puller, S. Duda, E. Lotfi, Y. Arzhangnia, C. T. Block, M. T. Ahlers and M. Greschner, Journal of Neuroscience 2020,  40 (6) 1302-1310; DOI:

  4. Claußen MSchulze JNothwang HGLoss of inner hair cell ribbon synapses and auditory nerve fiber regression in Cldn14 knockout mice. Hear Res. 2020 Mar 16;391:107950. doi: 10.1016/j.heares.2020.107950.



  1. Nemitz L, Dedek K, Janssen-Bienhold U. Rod Bipolar Cells Require Horizontal Cells for Invagination Into the Terminals of Rod Photoreceptors. Front Cell Neurosci. 2019 Sep 18;13:423. doi: 10.3389/fncel.2019.00423. 
  2. Suckau O, Gross I, Schrötter S, Yang F, Luo J, Wree A, Chun J, Baska D, Baumgart J, Kano K, Aoki J, Bräuer AU. LPA1, LPA2, LPA4, and LPA6 receptor expression during mouse brain development. Dev Dyn. 2019 May;248(5):375-395. doi: 10.1002/dvdy.23.
  3. Tetenborg S, Yadav SC, Brüggen B, Zoidl GR, Hormuzdi SG, Monyer H, van Woerden GM, Janssen-Bienhold U, Dedek K. Localization of Retinal Ca2+/Calmodulin-Dependent Kinase II-β (CaMKII-β) at Bipolar Cell Gap Junctions and Cross-Reactivity of a Monoclonal Anti-CaMKII-β Antibody With Connexin36. Front Mol Neurosci. 2019 Aug 28;12:206. doi: 10.3389/fnmol.2019.00206. 
  4. Yadav SC, Tetenborg S, Dedek K. Corrigendum: Gap Junctions in A8 Amacrine Cells Are Made of Connexin36 but Are Differently Regulated Than Gap Junctions in AII Amacrine Cells. Front Mol Neurosci. 2019 Jun 12;12:149. doi: 10.3389/fnmol.2019.00149. 



  1. Cordshagen A, Busch W,  Winklhofer M,  Nothwang HG and  Hartmann AM (2018) Phospho-regulation of the intracellular termini of K-Cl cotransporter 2 (KCC2) enables flexible control of its activity. J. Biol. Chem. 293:16984-16993.
  2. Günther, A., Einwich, A., Sjulstok, E., Feederle, R., Bolte, P., Koch, K.-W., Solov’yov, I.A., Mouritsen, H. (2018) Double-Cone Localization and Seasonal Expression Pattern Suggest a Role in Magnetoreception for European Robin Cryptochrome 4. Current Biology 28,
  3. Meyer A, Yadav SC, Dedek K. Phenotyping of Gap-Junctional Coupling in the Mouse Retina. Methods Mol Biol. 2018;1753:249-259. doi: 10.1007/978-1-4939-7720-8_17.
  4. Schlüter T, Berger C, Rosengauer E, Fieth P, Krohs C, Ushakov K, Steel KP, Avraham KB, Hartmann A, Felmy F, Nothwang HG (2018) miR-96 is required for normal development of the auditory hindbrain Hum Mol Genet. 27:860-874. 
  5. Ströh S, Puller C, Swirski S, Hölzel MB, van der Linde LIS, Segelken J, Schultz K, Block C, Monyer H, Willecke K, Weiler R, Greschner M, Janssen-Bienhold U, Dedek K. Eliminating Glutamatergic Input onto Horizontal Cells Changes the Dynamic Range and Receptive Field Organization of Mouse Retinal Ganglion Cells. J Neurosci. 2018 Feb 21;38(8):2015-2028. doi: 10.1523/JNEUROSCI.0141-17.2018
  6. Zhang L, Engler S, Koepcke L, Steenken F, Köppl C (2018) Concurrent gradients of ribbon volume and AMPA-receptor patch volume in cochlear afferent synapses on gerbil inner hair cells. Hear Res 364:81-89.



  1. Leyk J, Daly C, Janssen-Bienhold U, Kennedy BN, Richter-Landsberg C. (2017) HDAC6 inhibition by tubastatin A is protective against oxidative stress in a photoreceptor cell line and restores visual function in a zebrafish model of inherited blindness. Cell Death and Disease. 8:e3028. doi:10.1038/cddis.2017.415 HDAC6.
  2. Tetenborg S, Yadav SC, Hormuzdi SG, Monyer H, Janssen-Bienhold U, Dedek K. Differential Distribution of Retinal Ca2+/Calmodulin-Dependent Kinase II (CaMKII) Isoforms Indicates CaMKII-β and -δ as Specific Elements of Electrical Synapses Made of Connexin36 (Cx36). Front Mol Neurosci. 2017 Dec 19;10:425. doi: 10.3389/fnmol.2017.00425. 



  1. Bolte P, Bleibaum F, Einwich A, Günther A, Liedvogel M, Heyers D, Depping A, Wöhlbrand L, Rabus R, Janssen-Bienhold U, Mouritsen H., Localisation of the Putative Magnetoreceptive Protein Cryptochrome 1b in the Retinae of Migratory Birds and Homing Pigeons PLoS One. 2016 Mar 8;11(3):e0147819.  
  2. Bolte P, Herrling R, Dorgau B, Schultz K, Feigenspan A, Weiler R, Dedek K, Janssen-Bienhold U. Expression and Localization of Connexins in the Outer Retina of the Mouse. J Mol Neurosci. 2016 Feb;58(2):178-92. doi: 10.1007/s12031-015-0654-y. 
  3. Brüggen B, Kremser C, Bickert A, Ebel P, Vom Dorp K, Schultz K, Dörmann P, Willecke K, Dedek K. Defective ceramide synthases in mice cause reduced amplitudes in electroretinograms and altered sphingolipid composition in retina and cornea. Eur J Neurosci. 2016 Jul;44(1):1700-13. doi: 10.1111/ejn.13260.  
  4. Ebbers L, Runge K, Nothwang HG. Differential patterns of histone methylase EHMT2 and its catalyzed histone modifications H3K9me1 and H3K9me2 during maturation of central auditory systemCell Tissue Res. (2016) 365:247-264 
  5. Meyer A, Tetenborg S, Greb H, Segelken J, Dorgau B, Weiler R, Hormuzdi SG, Janssen-Bienhold U, Dedek K. Connexin30.2: In Vitro Interaction with Connexin36 in HeLa Cells and Expression in AII Amacrine Cells and Intrinsically Photosensitive Ganglion Cells in the Mouse Retina. Front Mol Neurosci. 2016 May 27;9:36. doi: 10.3389/fnmol.2016.00036. 


  1. Brüggen B, Meyer A, Boven F, Weiler R, Dedek K. Type 2 wide-field amacrine cells in TH::GFP mice show a homogenous synapse distribution and contact small ganglion cells. Eur J Neurosci. 2015 Mar;41(6):734-47. doi: 10.1111/ejn.12813. 
  2. Dorgau B, Herrling R, Schultz K, Greb H, Segelken J, Ströh S, Bolte P, Weiler  R, Dedek K, Janssen-Bienhold U., Connexin50 couples axon terminals of mouse horizontal cells by homotypic gap junctions J Comp Neurol. 2015 Oct 1;523(14):2062-81.  
  3. Lee SC, Meyer A, Schubert T, Hüser L, Dedek K, Haverkamp S., Morphology and connectivity of the small bistratified A8 amacrine cell in the mouse retina J Comp Neurol. 2015 Jul 1;523(10):1529-47.  
  4. Pukaß K, Goldbaum O, Richter-Landsberg C. Mitochondrial impairment and oxidative stress compromise autophagosomal degradation of α-synuclein in oligodendroglial cells J Neurochem. 2015 Oct;135(1):194-205. 
  5. Pukaß K, Richter-Landsberg C., Inhibition of UCH-L1 in oligodendroglial cells results in microtubule stabilization and prevents α-synuclein aggregate formation by activating the autophagic pathway: implications for multiple system atrophy Front Cell Neurosci. 2015 May 5;9:163.  
  6. Seiberlich V, Bauer NG, Schwarz L, Ffrench-Constant C, Goldbaum O, Richter-Landsberg C., Downregulation of the microtubule associated protein tau impairs process outgrowth and myelin basic protein mRNA transport in oligodendrocytes Glia. 2015 Sep;63(9):1621-35.


  1. Knop GC, Pottek M, Monyer H, Weiler R, Dedek K., Morphological and physiological properties of enhanced green fluorescent protein (EGFP)-expressing wide-field amacrine cells in the ChAT-EGFP mouse line Eur J Neurosci. 2014 Mar;39(5):800-10. 
  2. Meyer A, Hilgen G, Dorgau B, Sammler EM, Weiler R, Monyer H, Dedek K, Hormuzdi SG., AII amacrine cells discriminate between heterocellular and homocellular locations when assembling connexin36-containing gap junctions J Cell Sci. 2014 Mar 15;127(Pt 6):1190-202.  
  3. Weber M, Hartmann AM, Beyer T, Ripperger A, Nothwang HG,  A novel regulatory locus of phosphorylation in the C terminus of the potassium chloride cotransporter KCC2 that interferes with Nethylmaleimide or staurosporine-mediated activation.  J Biol Chem. 2014 Jul 4;289(27):18668-79. 


  1. Ströh S, Sonntag S, Janssen-Bienhold U, Schultz K, Cimiotti K, Weiler R, Willecke K, Dedek K., Cell-specific cre recombinase expression allows selective ablation of glutamate receptors from mouse horizontal cells PLoS One. 2013 Dec 12;8(12):e83076.   



(Stand: 31.05.2023)  |