Abstract
A dot blot hybridization procedure was developed to detect human blood meals in engorged mosquitoes. A biotinylated DNA probe allowed the detection of 10-100 ng of human DNA, discriminated well between human and nonhuman sources of blood, and cross-reacted only with monkey DNA. Results showed that this method was a specific and sensitive technique for the identification of blood meals up to 100 h after ingestion. The nonisotopic label offers easy handling without the problems inherent in the use of radioisotopes, and it can be adapted for use in routine field tests.
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