| MTBE | <abbreviation> Methyl-tert-butyl ether. (05 Mar 2000) |
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| MTF | <microscopy> A mathematical function that expresses the ability of an optical or electronic device to transfer signals faithfully as a function of the spatial or temporal frequency of the signal. The modulation transfer function is the ratio of percentage modulation of a sinusoidal signal leaving to that entering the device over the range of frequencies of interest. The modulation transfer function is usually presented as a graph of modulation transfer function versus log (frequency). For a square wave signal, the function is known as the CTF. Acronym: MTF (26 Mar 1998) |
| MTOC | <cell biology> Rather amorphous region of cytoplasm from which microtubules radiate. The pattern and number of microtubules is determined by the microtubule organising centre. The pericentriolar region is the major microtubule organising centre in animal cells, the basal body of a cilium is another example. Activity of microtubule organising centres can be regulated, but the mechanism is unclear. Acronym: MTOC (18 Nov 1997) |
| MTSP-1 serine protease | <enzyme> 29-kD protease isolated from mouse spleen; n-terminal Registry number: EC 3.4.21.- Synonym: mouse trypsin-type serine protease 1 (26 Jun 1999) |
| MTSP-2 serine protease | <enzyme> 29-kD protein isolated from mouse spleen Registry number: EC 3.4.21.- Synonym: mouse trypsin-type serine protease 2 (26 Jun 1999) |