SOME OBSERVATIONS ON THE THECA OF DEVELOPING OVARIAN FOLLICLES Margaret RYLE, Joyce KENT, Janice BOGGIS and Lesley WILKINSAnn. Biol. anim. Bioch. Biophys., 13 Hors-série (1973) 223-229DOI: https://doi.org/10.1051/rnd:19730521