| 释义 | 
		Definition of M and B in English: M and B(also M. & B., M & B) noun ɛm (ə)n(d) biː Pharmacology A pharmaceutical preparation originally marketed by the firm May and Baker, especially "M & B 693"noun the antibiotic sulphapyridine. Also, with distinguishing number: any of other pharmaceutical preparations manufactured by May and Baker. [A trademark in the United Kingdom. A symbol incorporating the letters M and B was registered as a trademark in 1935 (trademarks Jrnl. (1935) 30 Oct. 1349).] 
 Origin   1930s; earliest use found in The Lancet. From the initial letters of the May and Baker Co Ltd., pharmaceutical manufacturers.    Definition of M and B in US English: M and B(also M. & B., M & B) nounɛm (ə)n(d) biː Pharmacology A pharmaceutical preparation originally marketed by the firm May and Baker, especially "M & B 693"noun the antibiotic sulphapyridine. Also, with distinguishing number: any of other pharmaceutical preparations manufactured by May and Baker. [A trademark in the United Kingdom. A symbol incorporating the letters M and B was registered as a trademark in 1935 (trademarks Jrnl. (1935) 30 Oct. 1349).] 
 Origin   1930s; earliest use found in The Lancet. From the initial letters of the May and Baker Co Ltd, pharmaceutical manufacturers.     |