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Dolly the Sheep
Dolly (July 5, 1996 - February 14, 2003), a ewe, was the first mammal to have been successfully cloned from an adult cell. She was cloned at the Roslin Institute in Midlothian, Scotland, and lived ... > more -
Immune system
The immune system is the system of specialized cells and organs that protect an organism from outside biological influences. (Though in a broad sense, almost every organ has a protective function - ... > more -
Chromosome
The DNA which carries genetic information in cells is normally packaged in the form of one or more large macromolecules called chromosomes. A chromosome is, minimally, a very long, continuous piece ... > more -
Macromolecule
The literal definition of the term macromolecule implies large molecule. In the context of science and engineering, the term may be applied to conventional polymers and biopolymers (such as DNA) as ... > more -
Hair follicle
A hair follicle is part of the skin that grows hair by packing old cells together. Attached to the follicle is a sebaceous gland, a tiny sebum-producing gland found everywhere except on the palms, ... > more
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