TY - RPRT TI - Ultrastructural observations on membranous structures in developing mouse oocytes. AU - R F Dyer AU - J R Ruby AU - R G Skalko PY - 1973 DO - 10.1007/bf00307427 UR - https://pubmed.ncbi.nlm.nih.gov/4692956/ ID - 4692956 ER -