contractile vacuole pore

الوصف:

This cell has been placed in a suspension of a stain called nigrosin and then the preparation has been allowed to dry out. The stain dries around the cell showing the rows of depressions in the cell surface that correspond with where the cilia emerge. This species has two contractile vacuoles and they are unusual in the genus in not having radiating canals and because the pore is a long twisted structure. The pore of the posterior contractile vacuole can be seen as a twisted line in the posterior part of the cell.