Fig. 2From: Antibiotic treatment in feedlot cattle: a longitudinal study of the effect of oxytetracycline and tulathromycin on the fecal and nasopharyngeal microbiotaPrincipal coordinates analysis plots of the Bray-Curtis dissimilarities in nasopharyngeal samples by sampling time (colors) and treatment group (shapes). The percentages of variation explained by the principal coordinates are indicated on the axesBack to article page