A passive diffusion model has been developed which simultaneously accounts for the dependence of phloem mobility on permeability and acid dissociation. The model is consistent with the observation that the addition of an acid moiety to an otherwise phloem immobile compound may enhance that compound's ability to move in the phloem. However, acid trapping in the basic phloem is not the only enhan...

Transport xenobiotis throug tissues and organs was studied. The aim of this paper dynamic xenobiotic transfer and accumulation in the specific tissues and organs were investigated. Some of xenobiotics are suficiently soluble in blood to account for simple solution as a route of distribution. Many xenobiotics are distributed in association which plasma proteins. Cellular components are responsib...

Several biomarker enzymes such as catalase (CAT) and glutathione S-transferase (GST) can be used to measure oxidative stress in animals caused by exposure xenobiotics. The objective of the present study was characterize different points Capivari (CP1 CP2), Paraguaçu (PG1 PG2) Subaé (SB1 SB2) Rivers, state Bahia, relation presence xenobiotics, using CAT GST bioindicators M. jelskii. water-sampli...