Outline the typical immune response triggered when a pathogen infects the body

Cells under attack release histamine --> attracts macrophagesMacrophage engulfs pathogen into a phagocytic vacuole by phagocytosisMacrophage carries out antigen presentation of pathogenic antigen from cell surface membrane of pathogenT cell with complementary receptor detects pathogenic antigen by clonal selectionThis T cell stimulates the production of further T cells (clonal expansion)1) T killer cells: inject hydrogen peroxide into pathogenic cell2) T memory cells: remain in blood & provide immunological memory3) T helper cellsT helper cells release cytokines --> activate specific B cells to produce 2 types of B cell by clonal expansion:1) B memory cells: provide immunological memory2) Plasma cells: produce complementary antibodies to pathogenic antigen

GM
Answered by Grace M. Biology tutor

2612 Views

See similar Biology A Level tutors

Related Biology A Level answers

All answers ▸

Explain how a competitive inhibitor stops an enzyme from working.


State the differences between introns and exons.


How do enzyme controlled reactions work?


Calculate the frequency of genotypes in a population in Hardy Weinberg equilibrium with the allele frequencies of A=0.6 and a=0.4. Thus calculate the number of individuals with each genotype in a population of 150


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences