[Intestinal Microbiota in Migrating Barn Swallows around Osaka].

 Migratory birds are considered as vectors of infectious diseases, owing to their potential for transmitting pathogens over large distances. The populations of barn swallow (Hirundo rustica) migrate from Southeast Asia to the Japanese mainland during spring and migrate back to Southeast Asia during autumn. This migratory population is estimated to comprise approximately hundreds to thousands of individuals per year.

Vegetalization Induced by Procaine and Tetracaine in Sea Urchin Embryos: (sea urchin/development/vegetalization/procaine/tetracaine).

Vegetalization of sea urchin embryos was induced by the treatment with procaine and tetracaine, inhibitors of Ca mobilization, for 3 hr starting 3-5 hr after insemination at 20°C. The treatment starting 7 hr after insemination sometimes produced similar type of vegetalized embryos. The pulse treatment starting at the other stages hardly yielded vegetalized embryos.