I got to play around with an ELISPOT reader today. Also read about the differences between humoral and cellular immunity. Laypeople naturally think of antibodies when the subject of developing immunity comes up, but there's a lot more to it than just that (think: lymphocytes, cytokines).

There's a book on immunology that I borrowed from the library last month. I think I'll check it out again.

I also want to point anyone reading this to a list of clean jokes here.