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Superfetation. Superfetation (also spelled superfoetation – see fetus) is the simultaneous occurrence of more than one stage of developing offspring in the same animal. [1][2][3] In mammals, it manifests as the formation of an embryo from a subsequent menstrual cycle, while another embryo or fetus is already present in the uterus.
merc67/Getty Images. Think kale, spinach, arugula and Swiss chard.They’re all rich with folate, plus some other beneficial pregnancy nutrients cited by ACOG like vitamin C, the minerals iron ...
Methylmercury, a worldwide contaminant of seafood and freshwater fish, is known to produce adverse nervous system effects, especially during brain development. Eating fish is the main source of mercury exposure in humans and some fish may contain enough mercury to harm the developing nervous system of an embryo or fetus, sometimes leading to ...
By MARY CLARE JALONICK and LAURAN NEERGAARD Associated Press WASHINGTON (AP) -- The Food and Drug Administration is updating its advice for pregnant women on the appropriate levels of mercury in ...
The acardiac twin is a parasitic twin that fails to properly develop a heart, and therefore generally does not develop the upper structures of the body. The parasitic twin, little more than a torso with or without legs, receives its blood supply from the host twin by means of an umbilical cord-like structure (which often only has two blood vessels, instead of three), much like a fetus in fetu ...
Superfecundation is the fertilization of two or more ova from the same cycle by sperm from separate acts of sexual intercourse, which can lead to twin babies from two separate biological fathers. [1][2] The term superfecundation is derived from fecund, meaning able to produce offspring. Homopaternal superfecundation is fertilization of two ...
Mackerel is very high in B vitamins, which help convert the food you eat into energy. B vitamins also aid in red blood cell formation. Sufficient intake of vitamin B6 and vitamin B12 can help ...
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