Fig. 2. quantitative evaluation of total soluble collagen in the oesophagus and colon of Beagle dogs necropsied in acute (□) or chronic (■) phases from experimental infection with Y or Berenice-78 (Be-78) strains of Trypanosoma cruzi . Data are expressed as means ± standard error of the means. The solid lines indicate significant differences between groups during the chronic phase and the asterisk means significant difference between acute and chronic phases. Groups with n = 4. Be-78: infected animals with Be-78 strain; NI: noninfected animals; Y: infected animals with Y strain.
