SUMMARY: In pretrichocysts originate in the endoplasm as undifferentiated vesicles. They develop in the endoplasm and then migrate to sites below the pellicle to become juvenile trichocysts. The maturation process takes place below the pellicle and involves a physical expansion and change in staining affinity of the body material of the trichocyst. Cold fixation usually caused mature trichocysts to be extruded, but the use of osmium tetroxide fixative at 37° allowed them to be fixed without extrusion. Juvenile trichocysts cannot be extruded. In and after osmic fixation the body of the mature trichocyst, unlike the juvenile trichocyst, had no staining affinity for either potassium permanganate or toluidine blue. During fission in mature trichocysts were present only in small numbers at the poles of the protozoa remote from the furrow. Juvenile trichocysts mature in the first hour of the interfission period.


Article metrics loading...

Loading full text...

Full text loading...


Most cited this month Most Cited RSS feed

This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error