“…However, another study reported that NK cells activated by lipopeptidophosphoglicane from E. histolytica reduce the size of AHA (Lotter et al, 2009). Moreover, eosinophils and mast cells are also implicated in the cellular response and have been found to be involved in the reduction of amebic damage in various in vivo models (Houpt, 2002;Jarillo-Luna, 2002;López-Osuna et al, 1997. By using histochemical techniques in human intestinal tissue with FAC, eosinophils were stained with eritrosine B 1.5% (Benítez et al, 1987) and mast cells with toluidine blue 0.7% (Enerback, 1986;VenturaJuárez et al, 1990).…”