The placenta of the guinea-pig has assumed exceptional importance among the discoidal hemochorial placentae since the end of the sixties. Up to that date, numer

References ............................................... 59 Subject Index ............................................. 65 6 Introduction The retina as an org

The accumulation of literature dealing with the structure and function of synapses presents the synaptologist with a formidable problem. The diverse interests n

The establishment of the morphologically and physiologically intimate contact be tween two genetically different individuals, mother and embryo, which takes pla