The balance between T helper (Th) 1 and Th2 cell responses is a major determinant of the outcome of experimental leishmaniasis. but polarized Th1 or Th2 responses are not sufficient to account for healing or nonhealing. Here we show that high arginase activity. a hallmark of nonhealing disease. https://poolsproductscanadas.shop/product-category/clear-rp-parts/