A sputum culture is a sample of the gooey substance that often comes up from your chest when you have an infection in your lungs or airways. It is mostly made up of white blood cells that fight ...

The body produces mucus, also known as phlegm or sputum, to protect sensitive tissues in the airways. Changes in the sputum color, thickness, or quantity of phlegm may indicate a health problem, such ...

Lung cancer is the leading cause of cancer mortality rate worldwide, mainly because of the presence of metastatic disease at the time of diagnosis. Early detection of lung cancer improves prognosis, ...

Tuberculosis, also known as TB, is an illness that affects the lungs and is caused by a type of bacteria called Mycobacterium tuberculosis complex. TB can spread when a person with the illness coughs, ...

When you have a respiratory tract infection or a lung-related disorder, your lungs produce a thick substance known as sputum. This substance can make it hard to breathe, cause coughing, and harbor ...