The two types of alpha cells during the development of the guinea-pig pancreas Birger Petersson OriginalPaper Pages: 371 - 380
The differentiation of nematocysts and associated structures in the cnidaria Jane A. Westfall OriginalPaper Pages: 381 - 403
Elektronenmikroskopische Untersuchungen an unterschiedlich innervierten Muskelfasern der äusseren Augenmuskulatur des Rhesusaffen R. MayrL. StockingerW. Zenker OriginalPaper Pages: 434 - 452
The structure and development of the seminiferous follicle in Scyliorhinus caniculus and Torpedo marmorata (Elasmobranchii) Hugh P. Stanley OriginalPaper Pages: 453 - 468
The fine structure of photoreceptors in a marine flatworm Edith Krugelis MacRae OriginalPaper Pages: 469 - 484