Unusual or accidental cases of ovotestis in regular gonochoric species has been observed in several sea urchin species that led to indicate that they are hermaphrodites ( Boolootian and Moore, 1956; ...

At head of title: United States Geological Survey, Charles D. Walcott, director ...

A series of pyrrolidinoindolines have been synthesized as debromoflustramine B (4a) analogues for their evaluation as cholinesterase inhibitors. Structure−activity studies of this series revealed the ...

The serotonin-lir nervous system of the Bryozoa (Lophotrochozoa): a general pattern in the Gymnolaemata and implications for lophophore evolution of the phylum Thomas F. Schwaha Andreas Wanninger ...