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Leukocyte recruitment to sites of inflammation and infection is dependent on the presence of a gradient of locally produced chemotactic factors. This review is focused on current knowledge about the activation and regulation of chemoattractant receptors. Emphasis is placed on the members of the N-formyl peptide receptor family, namely FPR (N-formyl peptide receptor), FPRL1 (FPR like-1) and FPRL2 (FPR...
PA1b (Pea Albumin 1b) is a peptide toxin lethal for certain insects. This paper shows that the cultured insect cells Sf9 are sensitive to the toxin and display a high-affinity binding site for PA1b. Mammalian cells are not sensitive and no binding activity was detected. Signs of apoptosis of the Sf9 cells were observed in response to the toxin. The use of this cellular model also demonstrated that...
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