Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Morphometric parameters of Oxytricha acidotolerans (a) and Urosomoida sp. (b) in relation to pH. Symbols represent means of triplicates, the error bars denote 1 SD. The microphotographs (insets) show the typical shape of Lugol's fixed ciliates at low and near-to-neutral pH. Also shown are cysts of O. acidotolerans (a, right photograph) and several cells of the food alga, Chlamydomonas acidophila (b, right photograph). Scale bars: 50 μm.
