23rd September 2020

A 33-year-old presents with symptoms of persistent cough

A 33-year-old presents with symptoms of persistent cough, haemoptysis, weight loss, enlarged lymph nodes and dyspnoea for the last 3 months. He has recently emigrated from Bulgaria and one of his housemates has developed similar symptoms over the last few months as well. You decide to take cultures to investigate tuberculosis. Which of the following stains is used to detect Mycobacterium tuberculosis?

Select the SINGLE most appropriate option from the list below. Select ONE option only.