True. Multiplex immunohistochemistry (mIHC) refers to techniques that enable the simultaneous detection and visualization of multiple (often three, four, or more) distinct antigens on a single tissue section. This provides a powerful tool for studying the spatial relationships and co-expression of different proteins within the tissue microenvironment, which is invaluable in immunology and cancer research. Traditional multiplexing is limited by the number of available enzyme-chromogen combinations (e.g., brown DAB and red Fast Red) or fluorophores with non-overlapping spectra in immunofluorescence. Advanced mIHC methods overcome this by using: 1) **Sequential staining and stripping**: Staining, imaging, then chemically inactivating or eluting the antibodies to stain for a new set of markers on the same slide, repeated over multiple cycles. 2) **Metal-labeled antibodies and mass cytometry (IMC)**: Using antibodies tagged with rare earth metals and detecting them with mass spectrometry. 3) **Cyclic immunofluorescence**. These methods can map dozens of markers, creating a highly detailed phenotypic map of the tissue.

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Zambia

• Joseph Soko – 101 pts

• Visual Pathway Lesions
• Positive and Negative Symptoms
• Hallucinations and Delusions
• Antipsychotic Medications
• Emergency: Environmental Emergencies