Hello,
Today you will learn about ELISA – Enzyme Linked Immunosorbent Assay. The enzyme-linked immunosorbent assay (ELISA) is a test that uses antibodies and color change to identify a substance.
Here and here you can find interactive ELISA tutorials.
Here is another good interactive presentation.
http://en.wikipedia.org/wiki/ELISA
https://www.sdstate.edu/sdces/fcs/upload/ELISA_Part1_PPT.pdf