Comparative study of cholinergic cells in retinas of various mouse strains

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Comparative study of cholinergic cells in retinas of various mouse strains
T H Kang; Young Han Ryu; I B Kim; Goo Taeg Oh; M H Chun
Bibliographic Citation
Cell and Tissue Research, vol. 317, no. 2, pp. 109-115
Publication Year
We examined cholinergic cells in the retinas of BALB/C albino, C57BL/6J black, and 129/SvJ light chinchilla mice by using immunocytochemistry with specific antisera against choline acetyltransferase (ChAT). Two types of ChAT-immunoreactive amacrine cell bodies were found in the inner nuclear layer (INL) and ganglion cell layer in the retinas of all three mouse strains. They were distributed with mirror-image symmetry and their processes ramified in strata 2 and 4 of the inner plexiform layer. A distinct type of ChAT-immunoreactive cell was found only in C57BL/6J mouse retina. The somata of this third type of ChAT-immunoreactive cell were located in the outermost part of the INL, with their processes extending toward the outer plexiform layer. Double-labeling experiments demonstrated that these were not horizontal cells and that they were GABA-immunoreactive. The results suggested that these cells were probably "misplaced" cholinergic amacrine cells showing GABA immunoreactivity. This feature of the C57BL/6J mouse retina should be taken into account in studies of mutant mice having a mixed genetic background with a C57BL/6J contribution.
Amacrine cellCholine acetyltransferaseHorizontal cellMouse (BALB/C albino, C57BL/6J black, and 129/SvJ light chinchilla)Retina
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