Placental mammals

Part 1 book "Regulation of implantation and establishment of pregnancy in mammals" includes content: Introduction, history of maternal recognition of pregnancy, the role of steroid hormone receptors in the establishment of pregnancy in rodents, transmembrane mucin expression and function in embryo implantation and placentation, reflections on rodent implantation, the role of progesterone in maternal recognition of pregnancy in domestic ruminants, implantation and establishment of pregnancy in ruminants.

140p muasambanhan01 11-12-2023 7 2   Download

Part 1 book "Placentation in mammals" includes content: Mammalian placentation - a tribute to E.C. amoroso´s contributions to placenta development, the evolution of viviparity in vertebrates, development of pre implantation mammalian blastocyst, placentation in marsupials, the early stages of implantation and placentation in the pig, placentation in equids.

137p oursky05 20-09-2023 4 2   Download

Part 2 book "Placentation in mammals" includes content: Implantation and placentation in ruminants; canine endotheliochorial placenta - morpho functional aspects, placentation in the african elephant (loxodonta africana), development of the mouse placenta, placentation in the human and higher primates.

124p oursky05 20-09-2023 5 2   Download

One of the most unusual sources of phylogenetically restricted genes is the molecular domestication of transposable elements into a host genome as functional genes. Although these kinds of events are sometimes at the core of key macroevolutionary changes, their origin and organismal function are generally poorly understood.

27p viarchimedes 26-01-2022 10 0   Download

Based on evolutionary patterns of the vertebrate eye, Walls (1942) hypothesized that early placental mammals evolved primarily in nocturnal habitats. However, not only Eutheria, but all mammals show photic characteristics (i.e. dichromatic vision, rod-dominated retina) suggestive of a scotopic eye design.

12p vibeauty 23-10-2021 8 1   Download

The human chromosome 14 microRNA cluster (C14MC) is a conserved microRNA (miRNA) cluster across eutherian mammals, reported to play an important role in placental development. However, the expression kinetics and function of this cluster in the mammalian placenta are poorly understood. Here, we evaluated the expression kinetics of the equine C24MC, ortholog to the human C14MC, in the chorioallantoic membrane during the course of gestation.

21p viseulgi2711 31-08-2021 12 1   Download

APOBEC1 (A1) enzymes are cytidine deaminases involved in RNA editing. In addition to this activity, a few A1 enzymes have been shown to be active on single stranded DNA. As two human ssDNA cytidine deaminases APOBEC3A (A3A), APOBEC3B (A3B) and related enzymes across the spectrum of placental mammals have been shown to introduce somatic mutations into nuclear DNA of cancer genomes, we explored the mutagenic threat of A1 cytidine deaminases to chromosomal DNA.

12p viansan2711 30-07-2021 9 1   Download

record of Australia is too patchy for paleontologists to say whether there were any placental mammals in Australia at this time. Abundant Australian fossils date back to about 25 million years ago, at which point all the mammals in Austrlia were marsupials. They evolved into a spectacular range of forms, including kan- garoos and koalas. It was not until 15 million years ago that Australia moved close enough to Asia to allow placental mammals—rats and bats—to begin to colonize the continent.

33p machuavo 19-01-2013 43 2   Download

Biological diversity (or biodiversity for short) is one of the most intriguing features of life. Why are there so many insects on Earth and so few mammals? Why is biodiversity richest in the tropics, rather than being spread smoothly across the planet ( )? Why do different continents have different pat- terns of diversity? Almost everywhere on Earth, for example, placental mam- mals make up the vast diversity of mammal diversity. On Australia, however, there is a huge diversity of marsupial mammals.

33p machuavo 19-01-2013 45 4   Download