Investigation of oogenesis in hydra. Communication I. Ultrastructure of interstitial cells at early stages of their transformation into oocytes.

We studied ultrastructure of the interstitial cells (i-cells) at successive stages of their transformation into oocytes. The i-cells that form the epidermal thickening in the genital zone of the animal start to proliferate in hydras approaching sexual reproduction. Undifferentiated i-cells are characterized by a high density of diffusely disposed ribosomes… CONTINUE READING