English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Zendy Plus

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Zendy Tools

Zendy Open

Male individuals of the sea star Pattiria miniata have an annual spermatogenic cycle. This cycle was first suggested by gonad-index and histological analyses for a population of P. miniata in the field. The cycle was confirmed by tritiated-thymidine autoradiography of testes surgically removed about every 2 months from each of 10 individuals kept in the laboratory. Tritiated-thymidine autoradiography also revealed that the spermatogenic cycle includes a period of quiescence when sperm are not being produced and DNA synthesis is not occurring. Repeated surgical sampling of testes from individuals and autoradiography with tritiated thymidine are potentially useful methods for laboratory studies on the regulation of DNA synthesis and spermatogenesis and on regeneration.

DNA SYNTHESIS AND THE ANNUAL SPERMATOGENIC CYCLE IN INDIVIDUALS OF THE SEA STAR PATIRIA MINIATA