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Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.

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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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In 1864, the first barbiturate (barbituric acid) was synthesized.

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Vital signs (blood pressure, temperature, pulse rate, respiration rate) should be taken before any drug administration. Patients should be informed not to use tobacco or caffeine at least 30 minutes before their appointment.

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IgA antibodies protect body surfaces exposed to outside foreign substances. IgG antibodies are found in all body fluids. IgM antibodies are the first type of antibody made in response to an infection. IgE antibody levels are often high in people with allergies. IgD antibodies are found in tissues lining the abdomen and chest.

Tracking time of marker entry generates a chromosome map Tracking time of marker entry generates a chromosome map
To make an ice pack, place crushed ice in a plastic bag, bleed the air out of it, and seal it. Wrap To make an ice pack, place crushed ice in a plastic bag, bleed the air out of it, and seal it. Wrap
Permanent Gases of the Atmosphere Permanent Gases of the Atmosphere
Time course for antibodies to the EBV viral–specific antigens. Time course for antibodies to the EBV viral–specific antigens.
Use friction to mobilize the entire scalp. Place the fingers on the scalp, and move the skin over ... Use friction to mobilize the entire scalp. Place the fingers on the scalp, and move the skin over ...
Cranial polarization. Lightly place both thumbs on the anterior fontanel, with both index fingers ... Cranial polarization. Lightly place both thumbs on the anterior fontanel, with both index fingers ...
Video: Bond in biological molecules (Ionic, Covalent and Hydrogen bonds)/ How atoms bond?

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