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Tuberculosis (TB) is caused by the acid-fast bacterium Mycobacterium tuberculosis. Although most TB cases affect the lungs (pulmonary TB) , some infections occur in other body sites (extrapulmonary TB) . Among these cases, lymph node tuberculosis (LNTB) is the most common. Diagnosis of LNTB by conventional methods (staining, biochemical tests) has limitations—for example, formaldehyde preservation of tissue biopsies interferes with the acid-fast stain, leading to underdiagnosis or misdiagnosis. Now fluorescent in situ hybridization (FISH) is being used to diagnose extrapulmonary TB.
-When a tissue sample such as lymph node tissue is to be analyzed by FISH, it must first be treated with chemicals. Which of the following is NOT a reason that this step is needed?
Extended Eye Contact
Extended eye contact is a non-verbal communication form that occurs when two people look into each other's eyes for a longer period, indicating various emotions or intentions.
Attraction
The feeling of being drawn to someone or something, often leading to sexual or romantic interest.
Gender Differences
refers to the distinctions in characteristics, roles, behaviors, and cultural and social expectations traditionally associated with being male or female.
Instinctual
Instinctual relates to behaviors, responses, or actions that arise from natural internal drives rather than learned behavior, often associated with survival.
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