Back pain can also result from more-serious injuries, such as a vertebral fracture or ruptured disk; from arthritis and other age-related changes in your spine; and from certain infections. Possible causes of back pain include: Ankylosing spondylitis.
Microbiological culture. A microbiological culture, or microbial culture, is a method of multiplying microbial organisms by letting them reproduce in predetermined culture media under controlled laboratory conditions. Microbial cultures are used to determine the type of organism, its abundance in the sample being tested, or both.
noun, Biochemistry. 1. an essential nutrient, as a trace mineral or vitamin, that is required by an organism in minute amounts. micronutrient. 1. n. A substance, such as a vitamin or mineral, that is essential in minute amounts for the proper growth and metabolism of a living organism.