Abstract
The mycoplasmalike bodies were present in mature sieve tube elements of diseased tissue, but not in healthy controls. The bodies ranged 0.15-1.0 .mu.m in diameter and 0.5-1.8 .mu.m in length. Morphologically the bodies were spherical or tubular. Some of the tubular bodies were branched, and some bodies were attached to stacked endoplasmic reticulum.