Bøger i Advances in Anatomy, Embryology and Cell Biology serien

On one hand, we have fairly well substantiated experimental and clinical evidence that the efficacy of these contraceptives lies with other factors as well, for example their influence on sperm migration and capacitation or their influence on the transportation of the unfertilized egg.

Furthermore, Babuchin had already indicated that the structural development in the area of the posterior pole is very rapid compared with those regions of the retina which are situated more peripherally.

In fish, the sense of taste is extraordinarily highly developed and essentially more sensitive than that of mammals. Due to their similarity the taste organs of fish and mammals have been regard ed equally or rather the results taken from fish have been interpreted on the basis of the known morphology of the mammalian taste bud (TB).

Dedicated to Professor Otto Bucher (Lausanne) on the Occasion of His 65th Birthday

Dedicated to Professor emeritus Ko Hirasawa on the Occasion of his 77. Birthday

The application of morphometric techniques in biology and the development ofbioche mical methods for cytological-histological research have deepened substantially our knowledge and understanding of the structure, dynamics, and function of morphologi cal structures, thereby improving upon a purely descriptive presentation.

Studies on cell kinetics in untreated animals have for the most part been done on or gans in which many proliferating cells can be found.

In recent years the inferior olive and its projection to the cerebellum have attracted considerable interest.

Only through compartmenta lization can reaction components be kept apart prior to their reaction, isolated from other "reaction spaces" during the course of their reaction, and the reaction products incorporated into designated structures or transported to remote parts of the cell.

These criteria, however, are not valid, since considerable varia tion in developmental stage occurs between animals of the same age even between littermates and between animals of the same length.

Extensive observations - to a large extent by amateur ornithologists - with respect to geographical distribution, life cycles, demands on and adaptations to the environment, breeding habits, migration, and so forth have contributed towards basic and more widely relevant knowledge, e.

For example, the visually guided grasping system of the beak could be used as a model for the visually guided grasping system of the tips of the thumb and forefinger in humans (personal communi cation, Zeigler).