An X-linked genetically inherited recessive disease in which one or more of the normal blood clotting factors is not produced. This results in prolonged bleeding from even minor ...
An unborn child during the later stages of pregnancy. In humans, an embryo usually becomes a fetus after the 8th week of gestation. Unlike embryos, fetuses have clearly ...
An organic molecule that is a building blocks of proteins. There are at least 20 different kinds of amino acids in living things. Proteins are composed of different combinations ...
A class of substances (usually proteins) that are produced by specialized cells and that travel to other parts of the body, where they influence chemical reactions and regulate ...
A medical condition characterized by fatigue, weakness, poor appetite, weight loss, and paleness or a yellowish tinge to the skin and eyes resulting from a deficiency of red blood ...
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