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Placental mammals (infraclass
Placentalia /plæsənˈteɪliə/) are one of the
three extant subdivisions of the
class Mammalia, the
other two
being Monotremata...
- 'maternal part' of the placenta).
Placentas are a
defining characteristic of
placental mammals, but are also
found in
marsupials and some non-mammals with varying...
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Placental abruption is when the
placenta separates early from the uterus, in
other words separates before childbirth. It
occurs most
commonly around 25...
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Boreoeutheria (/boʊˌriːoʊjuːˈθɛriə/, "northern eutherians") is a
magnorder of
placental mammals that
groups together superorders Euarchontoglires and Laurasiatheria...
- the
clade consisting of
placental mammals and all
therian mammals, many long extinct, that are more
closely related to
placentals than to marsupials. Eutherians...
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reproduction varies,
especially among plants, fungi, and
other eukaryotes. In
placental mammals,
sperm cells exit the ****
through the male
urethra and enter...
- A
placental infarction results from the
interruption of
blood supply to a part of the placenta,
causing its
cells to die.
Small placental infarcts, especially...
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mammals more
closely related to
marsupials than to
placentals. The
evolutionary split between placentals and
marsupials occurred 125-160
million years ago...
- non-
placentals prevents the
expansion of the
torso needed for full pregnancy. Even non-
placental eutherians probably reproduced this way. The
placentals give...
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Placental lactogen, also
referred to as
chorionic somatomammotropin, is a
polypeptide hormone,
produced by the
placenta during pregnancy. It influences...
