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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.

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Everyone has one nostril that is larger than the other.

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It is believed that the Incas used anesthesia. Evidence supports the theory that shamans chewed cocoa leaves and drilled holes into the heads of patients (letting evil spirits escape), spitting into the wounds they made. The mixture of cocaine, saliva, and resin numbed the site enough to allow hours of drilling.

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Many supplement containers do not even contain what their labels say. There are many documented reports of products containing much less, or more, that what is listed on their labels. They may also contain undisclosed prescription drugs and even contaminants.

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The first oral chemotherapy drug for colon cancer was approved by FDA in 2001.

Squamous cell carcinoma. Squamous cell carcinoma.
Plant cell to Label Plant cell to Label
Fluorescence-activated cell sorter (FACS) separates cells that are labeled diffe Fluorescence-activated cell sorter (FACS) separates cells that are labeled diffe
cell cell
Calcium metabolism in osteoporosis: (a) bone deposition equals bone resorption; (b) bone resorption ... Calcium metabolism in osteoporosis: (a) bone deposition equals bone resorption; (b) bone resorption ...
IgM only, then IgD and IgM on the surface of a B cell. IgM only, then IgD and IgM on the surface of a B cell.
Video: Oral Hygiene & Braces Animation

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