| haptodysphoria | An unpleasant sensation derived from touching certain objects. Origin: G. Hapto, to touch, + dysphoria (05 Mar 2000) |
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| haptoglobin | <protein> Acid _2 plasma glycoprotein that binds to oxyhaemoglobin that is free in the plasma and the complex is then removed in the liver. Tetrameric (2 _, 2 _ subunits): the existence of two different _ chains in humans means that haptoglobins can exist in three variants in heterozygotes. (18 Nov 1997) |
| haptoglobins | Plasma glycoproteins that form a stable complex with haemoglobin to aid the recycling of haem iron. They are encoded in man by a gene on the short arm of chromosome 16. (12 Dec 1998) |
| haptometer | Instrument for measuring sensitivity to touch. Origin: G. Hapto, to touch, + metron, measure (05 Mar 2000) |
| haptonema | <cell biology> Filament extending between the paired flagella of certain unicellular algae (haptophytes). Supported by 6 or 7 microtubules (not in an axoneme like array) and apparently used for capturing prey in a manner analogous to the axopodia of heliozoa. (18 Nov 1997) |
| haptotaxis | <cell biology> Strictly speaking, a directed response of cells in a gradient of adhesion, but often loosely applied to situations where an adhesion gradient is thought to exist and local trapping of cells seems to occur. (18 Nov 1997) |
| haptotropism | <biology> An orientation response of an organism to stimulation by touch. (09 Oct 1997) |