To diagnose the medical conditions, MRI technique is used. Which is not used in MRI?

MRI is a diagnostic tool, which means –

What is the basis of most useful classification of medications in medical chemistry?

Which of the following is not correctly matched?

Which of the following is mRNA vaccine used against Covid-19 infection?

Name a clinical trial in which blood is transfused from recovered COVID-19 patient to a coronavirus patient who is in critical condition.