MTT assay in cells and protoplasts.
Pink coloured cells (viables).
(b) Cell of purple colour (viable).
(c) Colourless cell (non-viable).
(d) Pink and red coloured protoplasts (viable).
(e) Protoplast with red cytoplasm (viable).
(f) Protoplast with purple cytoplasm (viable).
(g) Control of non-viable cells dead with FAA.