Fig. 1

Levels of moxidectin in serum of dogs collected for analysis: 1. One or two days before each treatment (days −2, 27, 55, 83); 2. Ten or eleven days following treatments one through three (days 10, 39, 66); and 3. After the last treatment (days 91, 98, 105, 112, 119, 140, 168, 181, 210, 240, and 264). Subjects were infected with heartworms on day 112