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alkaloids

   Also found in: Dictionary/thesaurus, Encyclopedia, Wikipedia, Hutchinson 0.04 sec.
alkaloids,
n alkaline phytochemicals that contain nitrogen in a heterocyclic ring structure. They can have powerful pharmacological effects and are more often used in traditional medicine than in herbal treatments.

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The moths pick up alkaloids from several wild legumes in the Crotalaria genus.
Poppy seeds contain test-detectable levels of alkaloids such as morphine and codeine.
, copper, pyrrolizidine alkaloids, carbon tetrachloride, and phytotoxins) usually produce a periacinar zone 2-3 injury due to the low oxygen gradient (hypoxia) and high concentrations of, for example, cytochrome P450 isozymes (activation of reactive metabolites) of this zone (Kelly 1993; MacLachlan and Cullen 1995; Parkinson 1996).
 
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