Antibodies Flashcards
1
Q
What is a Antibodies structure
What do Antibodies do
A
4 polypeptide chains , one light and one heavy , has constant region and antigen binding site.
They assist death of pathogen by agglutination- clumps cells so easy for phagocytes to locate/engulf.
2
Q
What are monoclonal antibodies
How is it used to treat cancer cells
A
Single group genetically identical B cells, bind to anything you want.
Antibodies produced are specific to antigen to cancer cell , so receptors attach to antigen preventing chemical signal which prevents growth. Non toxic/ few side affects.
3
Q
Pregnancy test
A
Monoclonal detect HCG in urine, they are linked to coloured particles. If hcg present forms antigen antibody complex, as urine moves up strip complex trapped forms blue line.
