RD24118Histomorphometric comparison of the gravid and non-gravid uterus at the time of birth in the tammar wallaby (Macropus eugenii): insights into the embryo-maternal interface


Wallabies require rapid embryonic development as they give birth after a short pregnancy, immediately followed by ovulation. We analyzed and quantified differences between the gravid and the non-gravid uterus, which included a greater blood vessel area and increased surface area in the gravid endometrium and investigated the features ensuring the most efficient embryo-maternal exchange, such as polyploidy of trophoblast cells. However, these adaptations seem to be self-limiting making birth at the designated time inevitable. Image by Marie Muenzenberger.
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