[Solved] Opportunistic infections are the result of infectious material carried by health care workers from one patient to another. Microscopic Examination: The detailed analysis of tiny objects or structures using a microscope to observe features not visible to the naked eye. Cryosurgery: A surgical technique that uses extreme cold, often liquid nitrogen, to destroy abnormal or diseased tissue, including skin lesions. Cold Temperatures: Environmental conditions that exhibit a low degree of warmth, often resulting in the need for thermal protection or adaptation. Chemical Destruction: The process of breaking down chemicals or compounds using chemical reactions, often used in waste management or detoxification.