obsolete primary ovarian follicle growth involved in primary follicle stage (obsolete GO:0043930)
OBSOLETE. Increase in size of primary follicles including oocyte growth and granulosa and/or theca cell proliferation until more than one layer of granulosa cells is present (preantral follicle) as part of the primary follicle stage of oogenesis.
primary ovarian follicle growth during primary follicle stage
related