Stem cells are undifferentiated cells that have the ability to become specialized cells such as skin, bones, muscles, etc. The two main sources of stems cells are embryos at the embryonic stage of development (blastocyst) and adult tissue. They can be found in bone marrow, blood vessels, muscles, skin, liver, the brain, nasal mucosa, fatty […]
A stray pit bull/terrier mix became the only dog promoted to sergeant through combat and the most decorated dog of World War I. The dog made friends with soldiers as they drilled at Yale Field in New Haven, Connecticut. Corporal Robert Conroy in particular took a liking to the dog and named him Stubby because […]
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