Loading... Please wait...Narrated tutorials include up-to-date coverage of infectious diseases; the germ theory of disease; Koch’s postulates; agents of disease; how diseases spread; fighting infectious diseases; the immune system; immune system disorders; and much more! Virtual labs provide interactive explorations of Koch’s postulates; ELISA testing; and how diseases spread. Also includes a unique assessment function – featuring practice and test modes – and a teacher’s resource section, that allows you to create customized tutorials, tests and presentations.