Infections with CW
resulted in greater weight loss and red blood cell loss than CW
. Virulence measures for P. chabaudi CWavir and CWvir without drug treatment. Mean ± s.e. values over 13 (CWavir) and 12 (CWvir) infections combined for experiments 1, 2 and 3 are shown. Statistical difference between lines after adjustment for between-experiment differences (experiment) are at 0.001 level (**).