My name is Mariam and I am a PhD student in the first year of my studies.
I have been facing several problems performing the MTT but now I would like to ask you. After the incubation time with the MTT solution, is the colour change visible by the human eye? Or should I put it under the microscope to check if any crystals have been formed?
Because usually I see a yellowish colour even after the 2h incubation.
Thank you for your help in advance.