Pupil dilation and constriction can determine the valence of surprise from the action to the reaction of the individual. Positive valence to surprise is shown through a dilation or expansion of the pupil, where as negative valence in surprise is associated with pupil constriction.
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 foundational and basic diagnostic methods used extensively as a research tool in molecular biology. Microbial cultures are used to determine the type of organism, its abundance in the sample being tested, or both. It is one of the primary diagnostic methods of microbiology and used a
Definition. A blood culture is done when a person has symptoms of a blood infection, also called bacteremia. Blood is drawn from the person one or more times and is tested in a laboratory to find and identify any microorganism present and growing in the blood.ell culture the maintenance or growth of animal cells in vitro, or a culture of such cells. blood culture microbiologic examination of a blood sample to check for presence of microorganisms.