Systemic pesticides have become popular but the concept of making the entire plant toxic creates personal exposure problems beyond what many growers consider safe.
内吸式杀虫剂最近很流行，但让整株植物变得有毒会让养殖者也暴露在化学农药中，很多养殖者会觉得不安全。
The slightly elevated levels of aminotransferases may reflect an early toxic effect of methotrexate on the liver, although a nonspecific response to a systemic infection is also possible.
转氨酶水平轻微升高可能反映了甲氨蝶呤对肝脏的早期毒性作用，尽管也可能是全身感染引起的非特异性反应。
This thesis overview the systemic toxic effects of lead, including the toxic effects on nervous system, cardiovascular system, urinary system, reproductive system and the development.
本文主要介绍了铅对各个系统如神经系统、心血管系统、泌尿系统、生殖系统以及个体发育的毒性效应。
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