2. Extra credit lecture: 2 cases from Gastrointestinal (1 from bacterial and 1 from viral), 1 UTI, 1 nervous system (Bacterial). Mention toxin if I ask about how disease is caused.\
3. Extra credit assignment: posted on blackboard. up to 2 articles, 20 points max. these points will be added to your past exams due after the final exam on Sunday 5/22