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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.

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Women are two-thirds more likely than men to develop irritable bowel syndrome. This may be attributable to hormonal changes related to their menstrual cycles.

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Approximately 70% of expectant mothers report experiencing some symptoms of morning sickness during the first trimester of pregnancy.

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Liver spots have nothing whatsoever to do with the liver. They are a type of freckles commonly seen in older adults who have been out in the sun without sufficient sunscreen.

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The lipid bilayer is made of phospholipids. They are arranged in a double layer because one of their ends is attracted to water while the other is repelled by water.

The pancreas. This organ sits just below the stomach and is both an exocrine and an endocrine gland. The pancreas. This organ sits just below the stomach and is both an exocrine and an endocrine gland.
Estrogen and Progesterone Levels During Menstrual Cycle Estrogen and Progesterone Levels During Menstrual Cycle
Endocrine Organs and the Hormones They Secrete (1 of 2) Endocrine Organs and the Hormones They Secrete (1 of 2)
T cells are of three general types: (1) helper T cells that secrete cytokines, which upregulate the ... T cells are of three general types: (1) helper T cells that secrete cytokines, which upregulate the ...
Ovaries and Testes Ovaries and Testes
Northern blot analysis of dfmr1 gene expression in Drosophila ovaries and embryos Northern blot analysis of dfmr1 gene expression in Drosophila ovaries and embryos
Video: Muscle Twitch and Muscle Tension - Motor unit size and force

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