The vitelline membrane surrounds large examples of these cells that can be microinjected with cRNA in Xenopus.
Okadaic acid induces GVBD in these cells, committing them to enter M phase. In zebrafish, activin stimulates maturation of these cells during their quiescent period. These cells are pierced by micropipets during ICSI, which sometimes employs a GnRH-agonist. The vitelline membrane surrounds large examples of these cells that can be microinjected with cRNA in Xenopus. In mammals, these cells are surrounded by the zona pellucida. Androstenedione from the theca is reduced by aromatase in the granulosa cells that form the follicle surrounding these cells after they are stimulated by FSH. They are produced in a process that also makes three polar bodies. For 10 points, name these female gametes that form a zygote by being fertilized with sperm.
Okadaic acid induces GVBD in these cells, committing them to enter M phase.
egg cells [or ovum; or ova; or oocytes; or ovocytes; or ovarian follicles; prompt on gametes; prompt on gametocytes; prompt on germ cells]