sentences:  The aboriginal population knew to avoid the ailment by not drinking from certain water sources and by taking water from soaks or pits dug in the dry sandy bed of a stream.It is postulated that the disease may be due to ingestion of cyanobacterial (blue-green algal) toxins, in particular cylindrospermopsin, a toxin from "Cylindrospermopsis raciborskii" and other cyanobacteria, which is a hepatotoxin.The symptoms of the disease are consistent with a hepatitis or liver disorder, and "Cylindrospermopsis" is known to be widespread in inland Australian water sources.