Salivary glands are exocrine glands in the mouth that produce saliva (spit) and empty it into your mouth through ducts, or small openings. They lubric

Mycoplasma, " which is a genus of bacteria that lack a cell wall around their cell membrane. They are the smallest bacterial cells yet discovered, typ

A prokaryotic cell is a type of cell that lacks a distinct nucleus and other membrane-bound organelles. These cells are typically smaller and simpler

A vaccine is a biological preparation that provides active acquired immunity to a particular infectious disease. Vaccines typically contain weakened o

Bacteria are microscopic, single-celled organisms that are found virtually everywhere on Earth. They are incredibly diverse and have adapted to thrive

Antibodies, also known as immunoglobulins (Ig), are specialized proteins produced by the immune system in response to the presence of foreign substanc

Autotrophs are organisms that can produce their own food using inorganic materials, such as carbon dioxide and water, along with energy from sunlight

Fermentation is a metabolic process that converts carbohydrates, such as sugars and starches, into alcohol or organic acids using microorganisms such

Antibodies, also known as immunoglobulins (Ig), are proteins produced by the immune system in response to the presence of foreign substances called an