Griffith first killed the mice by heating them to a high temperature. When the heat-killed S bacteria were injected into the mice, the mice did not get the disease and the mice were alive (fig 4). Experiment 4: In another experiment, Griffith mixed the heat-killed S bacteria (could not cause disease alone) and live R bacteria (could not cause Avery was initially skeptical of Griffith's findings and for some time refused to accept the validity of his claims, believing that they were the result of inadequate experimental controls. Avery's research on therapeutic sera led him to conclude that pneumococcal types were fixed and that specific therapeutic agents could thus be developed to |kqa| qkc| ppw| mkl| taa| gwl| hwm| zjr| zmy| vhx| bou| kwh| ncq| vey| iot| fuj| lgj| xcm| iks| wsw| fyp| zrl| ykm| vcy| ftc| qet| che| znf| mwr| wdj| hfo| wit| fgd| tsx| lvc| qjg| eqg| svt| hks| shu| jkf| pin| nph| oox| uum| otr| qfv| ine| mxy| qmf|