A schematic overview
of ovarian tissue (A). Dotplot summarizing
the immunohistochemical staining pattern in oocytes and granulosa
cells with the size of dots representing the intensity of the staining
(B). Representative images of immunohistochemical stainings of human
ovary targeting 18 different MPs (C). The brown color indicates antibody
binding. Eleven proteins (ANKRD61, GPR63, LEKR1, PROX2, QRFP, RERGL,
RNF215, TRIM61, TTLL3, ZNF781, and ZNF793) showed most prominent protein
expression in oocytes, two proteins (FAM110D and TRIM73) showed highest
expression in granulosa cells, and five proteins (CTXN1, MRO, SEM1,
STRC, and ZNF582) showed equally strong expression in both oocytes
and granulosa cells. FAM110D showed cytoplasmic and membranous staining,
ZNF781 nuclear staining, SEM1 and RERGL displayed a combination of
both cytoplasmic and nuclear staining, and the remaining proteins
were exclusively expressed in the cytoplasm.