cram gene:

A cytosine response modifier gene that inhibits the proteolytic activation of interleukin-1 beta, thereby suppressing its response to infection.


Any of a class of phytohormones whose principal functions are the induction of cell division and the regulation of differentiation of tissue.


Pertaining to, resulting from, or having the action of a cytotoxin.


A toxin or antibody that has a specific toxic action on cells of special organs; cytotoxins are named according to the cells for which they are specific.



Deoxyribonucleic acid, a double-helix polymer encoding genetic information for the transmission of inherited traits; comprises two long, linked chains of monomer nucleotides consisting of a deoxyribose sugar molecule to which is attached a phosphate group and one of four nitrogenous bases—two purines (adenine and guanine) and two pyrimidines (cytosine and thymine).

DNA amplification primer:

A short stretch of nucleotides that bind, or anneal, to the DNA sequence to be cloned and serve as the starting point for copying in a polymerase chain reaction.

DNA clone:

A DNA fragment produced by propagating and storing a large number of identical molecules having a selected DNA fragment as their single ancestor.



An eruption upon a mucous surface.


Acute disease of the central nervous system seen in persons convalescing from infectious disease, usually one of viral origin.

Epithelial cell:

Surface layer of cells closely bound to one another to form continuous sheets covering surfaces that may come into contact with foreign substances.


A condition frequently seen in children, marked by intermittent fever lasting 3 days, falling by crisis, and followed a few hours later by a rash on the trunk.


Genetic recombination:

The formation of new combinations of genes as a result of crossing over between homologous chromosomes.


A set of chromosomes containing the heritable genetic material that directs gene development.



An antibody that agglutinates erythrocytes.


Abnormally low blood pressure.


IgM antibody:

A large immunoglobulin protein with extremely high molecular weight of 19 S.

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