| monitoring of ochratoxin a exposure of the portuguese population through a nationwide urine survey--winter 2007. | ochratoxin a (ota) is a mycotoxin produced by a variety of fungi, such as penicillium verrucosum and aspergillium spp., which has been found to have a wide number of potentially deadly toxic effects, and can enter the human organism through a variety of means. it then finds its way into the bloodstream and, after a lengthy process, is eventually excreted through the urine. it can thus be detected in its original form not only in blood samples but also in this biological medium. as such, and in a ... | 2010 | 20018347 |