| actomyosin |
a protein complex in muscle fibers; composed of myosin and actin; shortens when stimulated and causes muscle contractions
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| actual |
presently existing in fact and not merely potential or possible; "the predicted temperature and the actual temperature were markedly different"; "actual and imagined conditions" taking place in reality; not pretended or imitated; "we saw the actual wedding on television"; "filmed the actual beating" being or reflecting the essential or genuine character of something; "her actual motive"; "a literal solitude like a desert"- G.K.Chesterton; "a genuine dilemma" existing in act or fact; "rocks and trees...the actual world"; "actual heroism"; "the actual things that produced the emotion you experienced" de facto: existing in fact whether with lawful authority or not; "de facto segregation is as real as segregation imposed by law"; "a de facto state of war" being or existing at the present moment; "the ship's actual position is 22 miles due south of Key West"
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| ACTH |
adrenocorticotropic hormone: a hormone produced by the anterior pituitary gland that stimulates the adrenal cortex
Ãâó: wordnet.princeton.edu/perl/webwn
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| actuator |
a mechanism that puts something into automatic action
Ãâó: wordnet.princeton.edu/perl/webwn
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| actin |
one of the proteins into which actomyosin can be split; can exist in either a globular or a fibrous form
Ãâó: wordnet.princeton.edu/perl/webwn
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