| 释义 |
▪ I. toxon1 Zool.|ˈtɒksɒn|
[a. Gr. τόξον bow.]
A bow-shaped sponge spicule. Cf. tox n.
1894Jrnl. Marine Zool. Feb. 40 A second and slender form of spicule, bow-shaped (toxon) can also be made out.
▪ II. ˈtoxon2 Path. Chem.
[f. toxin + -on, -one.]
(See quots.)
1900Lancet 18 Aug. 528/1 Löffler's diphtheria bacillus produced substances of two kinds—toxins and toxons... The action of the toxons was different from, and weaker than, that of the toxins. 1904Brit. Med. Jrnl. 10 Sept. 567 The diphtheria poison is not a single substance, but consists of two chief components, toxin and toxon.
Hence ˈtoxonoid, a modification of a toxon, in which the toxic properties are lost. (Cf. toxoid.)
1904Brit. Med. Jrnl. 10 Sept. 573 Ehrlich explained the peculiarity that the ‘toxon’ has acute killing properties, by the assumption of two different kinds of toxon, thus introducing the conception of a new body—the toxonoid. |