T-514 or Peroxisomicine A1 (PA1) is a toxin isolated from plants of genus Karwinskia. In vitro studies
described selective toxicity of PA1 on malignant cell lines. A toxic effect of PA1 on TC-1 cells in vivo was reported.
The objective was to evaluate the effect of PA1 over invasion of TC-1 cells to muscle fibers in vivo. TC-1 cells were
implanted in 36 mice divided in two groups (n: 18): treated with PA1 or with vehicle, a control group was included. At 10 days, nine mice of each group were euthanized. TC-1 implant site was analyzed by light and electron microscopy, a morphometric study was also performed.