background: in this study, the effects of three structural analogues of adenosine upon proliferation of human tumor cells were investigated. previous research showed a cytotoxic effect of adenosine via a3 receptor and a1 receptor and sometimes this effect was receptor independent. the researches showed a differential cytotoxic effect of adenosine and its a3 agonists on cancerous cells, while ot...

The toxicity of individual disinfectants has been studied in vitro using human cell cultures (HT-29 (epithelial-like cells colon adenocarcinoma), HEK 293 (human embryonic kidney cells)) to create a model for assessing the residual amounts that can enter milk person. Standard tests have used assess viability and amount: methyl tetrazolium (MTT) test, neutral red staining (NRP), sulforhodamine B ...

A cytotoxic effect of mouse peritoneal macrophages against syngeneic and allogeneic erythrocytes was demonstrated by isotope release and release of hemoglobin. The cytotoxic effect was dependent on the contact between viable, activated macrophages and target cells. Activation was accomplished by prolonged cultivation of macrophages and by the presence of Zn(++) and Con-A. Immunization did not p...

it has been reported that several conifers possess cytotoxic activities on some human tumor cell lines. taxol as a natural cytotoxic compound has been extracted from this family. in a program to screen the cytotoxic effects of natural resources, male and female branchlets, fruit or bark of two different species of iranian conifers were collected, identified and the cytotoxic effects of their hy...