methacycline

Objective To research on the neutrophil cell ( NC ) infiltration in the ischemic brain and the influences by methacycline ( MC ) .

目的探讨实验性脑缺血嗜中性粒细胞（NC）的浸润规律及甲烯土霉素（MC）对其影响。

A method for simultaneous determination of 7 antibiotics residues of tetracycline , chlortetracycline , oxytetracycline , doxycycline , demeclocycline , methacycline and minocycline in animal tissues has been developed .

建立了动物组织中四环素、金霉素、土霉素、强力霉素、去甲基金霉素、甲烯土霉素和二甲胺四环素等7种四环素类抗生素残留量的液相色谱同时测定方法。

The content of related substances of doxycycline hyclate from different manufacturers were in the range from 1.5 % to 2.7 % . Under stress testing condition doxycycline hyclate turned into methacycline that led to the increase of related substances .

各原料有关物质总量在1.5%～2.7%之间，苛刻条件下放置过程中多西环素可转变成美他环素使有关物质明显增加。