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Blood vessel glycosylation at the fetomaternal interface of four near-term specimens of tammar wallaby, Macropus eugenii, has been examined at days 23–26 of the 26.5 day pregnancy and compared with that of other species.A panel of 23 lectins was used to compare vasculature in tammar with non-mammalian (shark, skink) and eutherian species at early and late gestation (camel, horse and alpaca), and term/near-term...
The placenta is the most varied organ within the Mammalia. There are many similarities, as well as some differences, between the marsupial embryo and those of eutherian mammals. The most striking difference is the lack of the inner cell mass in the blastocyst which consists solely of a single layer of trophoblast cells. The trophoblast expands and eventually becomes part of the definitive chorio-vitelline...
The biochemical composition of uterine and fetal fluids during pregnancy of the grey short-tailed opossum was compared with new and published data on the tammar wallaby. In the grey short-tailed opossum, there are three main phases of embryonic nourishment. During the first phase, the embryo obtains nutrients from uterine secretion transferred into the yolk sac. The amount of uterine secretion declines...
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