Isotype switch - Study guides, Class notes & Summaries

Leukocyte Adhesion Deficiency - correct answer AR disorder Etiology -Absence of CD 18/LFA-1 Integrin protein on phagocytes Effect -Impaired migration and chemotaxis of phagocytes -Absence of β2-Integrin Sx -Recurrent Bacterial infections -Impaired Wound healing -Delayed detachment of Umbilical Cord after birth -Absence of Pus Labs -Increased Neutrophils in blood but absence of Neutrophils @ infection sites Gap Formation Btw Endothelial Cells - correct answer Accounts f...

antigenic shift - ANSWER-rearrangement of genes - discontinuous and irregular variation major antigenic drift - ANSWER-mutation and selection- gradual and continuous variation minor antigenic variation - ANSWER-Alter surface proteins - parasite coevolve with antibody response purpose of combination antiviral therapy - ANSWER-one pill contains 3 inhibitors, stop virus from copying Bacterial superantigens - ANSWER-toxins that increase adherence between MHC class II proteins on antigen-...

MCB 150 Midterm 3 Questions and Answers Latest 2024 Issues for vaccine design - antigenic variation/drift: viruses have different antigenic subtypes and some have high mutation rates - prevent potential pathogenesis: vaccines must not cause excess immune pathology; some vaccine trials result in worse disease antibody dependent enhancement (ADE) a vaccine makes the infection worse instead of preventing it inflammation a nonspecific response mediated by cytokines, small mole...

VBSC 211 STUDY GUIDE WITH COMPLETE SOLUTION...

What is the hapten- carrier effect? Small-molecule antigen requires covalent linkage to a larger carrier to stimulate adaptive immune response. The process is achieved in collaboration between hapten-specific B cells and carrier-specific T cells. This is the basis of developing conjugated vaccines. What are the common superantigens and related diseases? SEB and SEC cause food poisoning; TSST and SPE-C cause toxic shock syndrome. Superantigens bind the Vβ region of TCRs (CDR4) and outside of...

Biology 1150 exam 5 questions and answers 100% correct What is a telomere? a region if repetitive nucleotide sequences at the end of chromosomes that protect them from deterioration or fusion from other chromosomes How do telomeres determine the life span of a cell? it limits the life span by 2 fators: -denuding chromosomes of DNA necessary for viability -acting as mitotic clock What is metastasis? the spread of caner cells from one part of the body to another What is ...