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