The Rete ovarii and follicle formation in marmosets (Callithrix jacchus and Callithrix penicillata).

Summary The Rete ovarii in young marmosets shows a strong reactivity for a certain number of enzymes (LDH; NADH 2 -TR; NADPH 2 -TR; G-6-PDH; 6-PGDH; α-GPDH; β-OHBDH and nonspecific esterase). The granulosa cells of the cortical innermost placed follicles have the same enzymatic reactivity. The germinal epithelium results negative to the mentioned group of enzymes at this phase of the development. The Rete ovarii must play an important role in the granulosa cells differentiation.