obsolete primary ovarian follicle growth involved in double layer follicle stage (obsolete GO:0043929)
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 double layer follicle stage of oogenesis.
primary ovarian follicle growth during double layer follicle stage
related