MCQ
The stain used to visualise mitochondria is:
- AFast green.
- BSafranin.
- CAcetocarmin.
- ✓Janus green.
✓
Answer
Correct option: D.
Janus green.
Janus green is used to stain mitochondria. Janus green act as an indicator and changes colour according to the amount of oxygen present. It oxidizes to blue colour in. presence of oxygen and in its absence changes its colour to pink. Safranin is used to stain nuclei and lignified walls of cell. Acetocarmine is used for staining nucleic acid and chromosomes. Fast green It is used for staining his tones at alkaline $pH$ after acid extraction from $\text{DNA.}$
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