University revision · Blood Transfusion Science

Syphilis in Transfusion Medicine

Question 1 of 15 Course: Biomedical Science(Degree)

What does the term 'serofast' mean in syphilis testing?

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False. The NOTCH pathway is mechanistically distinct from kinase cascade pathways like MAPK. It is a paracrine signaling system that relies on regulated intramembrane proteolysis (RIP). Activation involves ligand binding, which triggers two sequential proteolytic cleavages of the NOTCH receptor. The final cleavage by γ-secretase releases the NOTCH Intracellular Domain (NICD), which translocates to the nucleus and acts as a transcriptional co-activator. There is no phosphorylation cascade involved in the core signal transduction.

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