1.   For this purpose rats were inoculated with Nippostrongylus brasiliensis by injecting the parasites subcutaneously.

2.   Scientists at the Scripps Research Institute in San Diego said they had inoculated rats with an artificial cocaine-like substance that triggers the production of antibodies to cocaine.

3.   Scientists at the Scripps Research Institute in La Jolla, Calif., said Wednesday they inoculated rats with an artificial cocaine-like substance that triggers antibodies to cocaine.

4.   Scientists at the Scripps Research Institute in San Diego, California say they inoculated rats with an artificial cocaine-like substance that stimulates production of antibodies to cocaine.