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External view of a fetal pig. Fetal pigs are unborn pigs used in elementary as well as advanced biology classes as objects for dissection.Pigs, as a mammalian species, provide a good specimen for the study of physiological systems and processes due to the similarities between many pig and human organs.
Human skin is very similar to pig skin, therefore many preclinical studies employ pig skin. [ 21 ] [ 22 ] In addition to providing use in biomedical research [ 21 ] [ 22 ] and for drug testing, [ 23 ] genetic advances in human healthcare have provided a pathway for domestic pigs to become xenotransplantation candidates for humans.
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Breed Origin Height Weight Color Image Aksai Black Pied: Kazakhstan: 167–182 cm: 240–320 kg (530–710 lb) Black and White--- American Yorkshire: United States
The pig (Sus domesticus), also called swine (pl.: swine) or hog, is an omnivorous, domesticated, even-toed, hoofed mammal. It is named the domestic pig when distinguishing it from other members of the genus Sus. It is considered a subspecies of Sus scrofa (the wild boar or Eurasian boar) by some authorities, but as a distinct species by others.
High fetal and neonatal death make the process very inefficient. Resulting cloned offspring are also plagued with development and imprinting disorders in non-human species. For these reasons, along with moral and ethical objections, reproductive cloning in humans is proscribed in more than 30 countries. [ 31 ]
The allantois (/ ə ˈ l æ n t oʊ ɪ s / a-LAN-toe-iss; [1] pl.: allantoides or allantoises) is one the extraembryonic membranes arising from the yolk sac.It is a hollow sac-like structure filled with clear fluid that forms part of the developing conceptus in an amniote that helps the embryo exchange gases and handle liquid waste.
The first mini pig breed developed in the United States was the Minnesota Miniature, which emerged in the 1940s. [5] [6]In the 1960s, Vietnamese Pot-bellied pigs that grew up to 91 kilograms (200 lb) were sent to zoos in Western cities [7] and were used for medical research in the fields of toxicology, pharmacology, pulmonology, cardiology, aging, and as a source of organs for organ ...