# Science/Maths

posted by
**Isa**
.

I don't know where to start with it?

A tube is set up for radioimmunoassay containing antibody with a capacity for binding 1ug antigen. Both labelled (50,000 counts per ug) and unlabelled antigen are added to the tube. Work out a formula to calculate the amounts of counts bound to antibody in each case.

Any help will be greatly appreciated!