| [presence of intestinal parasites in vegetables sold in the metropolitan area of são paulo-sp, brazil. ii--research on intestinal protozoans]. | vegetables in nature, commercially traded in the metropolitan area of s. paulo, brazil, were analyzed by means of the appropriate methodology with a view to discovering and identifying protozoan cysts of medical interest. the vegetables under study consisted of 50 samples of each of the varieties listed below: lettuce (lactuca sativa)-oily leaves and crisp-head varieties, endive (chicorium sp) and watercress (nasturtium officinale). results showed high rates of contamination in all the varieties ... | 1992 | 1342522 |