acidity of the food vacuole of Tetrahymena or other ciliates

[Jiajer Liou]

Hi,

Does anyone know of any references about the acidity (pH value) inside 
the food vacuole of Tetrahymena?  Any suggestion or comment on this 
subject will be appreciated.

Thanks.

Jia-Jer Liou
Bioprocess Technology Institute
liou at biosci.cbs.umn.edu