Transcript Cytology micrographs

Cytology micrographs
Cell membrane
Trilamellar structure
Dark (electron dense outer layer)
Light (electron lucent middle layer)
E M two adjacent cell membranes
Mitochondria
rounded or oval, surrounded by two membranes; outer
membrane is smooth and inner membrane forms shelves
(cristae)
Matrix shows electron dense granules: Ca+, RNA and DNA
Mitochondria
Mitochondria
Golgi apparatus
Parallel flat membranous saccules
transfer vesicles
secretory vesicles
Lysosomes
Primary:
Homogenous rounded structure
Secondary:
1- phagosome: rounded structure with heterogeneous matrix
2- multivesicular bodies: large vesicle with bibles in the matrix
3- autolysosome: old organelle inside (usually mitochondria)
Lysosomes
Primary lysosome
Lysosomes
Autolysosome
Lysosomes