You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is Which of the following is not a feature of reversible cell injury? and explain in detail?
Presence of large amorphous densities in swollen mitochondria is seen in irreversible cell injury.
MORPHOLOGIC FEATURES:
Grossly, the affected organ such as kidney, pancreas, or heart muscle is enlarged due to swelling. The cut surface bulges outwards and is slightly opaque. Microscopically, it is characterized by the following features: 
i) The cells are swollen and the microvasculature is compressed.
ii) Small clear vacuoles are seen in the cells and hence the term vacuolar degeneration. These vacuoles represent distended cisternae of the endoplasmic reticulum.
iii) Small cytoplasmic blebs may be seen.
iv) The nucleus may appear pale. 
Harshmohan - Essential Pathology for Dental Students Ed 4th P: 35