promastigotes of l. tropica , on the contrary , display in the midgut of ph . papatasi signs of degeneration which are expressed in break of their normal ultrastructure ( changes in the shape of cells , break in cell division , thickening or thinning of intracytoplasmatic formations , especially of mitochondria , intensified vacuolisation of cytoplasm , changes in the structure of nucleus and kinetoplast ; and others ) .
C0007634
cells
C0007590
cell division