The peptide type hormones such as insulin and adenocorticotropic hormone (ACTH) have a positive chemoattractant effect on Tetrahymena. Non-hormone protein-sulphate provoked negative chemoattraction. Of the amino acid type hormones, serotonin produced negative, and the histamine and di-iodotyrosine induced positive chemotactic effects. The first encounter with these molecules may modify the chemotactic behaviour of the progeny cells. In a significant number of cases there was a different response after repeated encounters of cells and hormones.
|Number of pages||11|
|Publication status||Published - 1994|
ASJC Scopus subject areas
- Microbiology (medical)