Experiment 1.Gross specimen:primary pulmonary tuberculosis,chronic fibrotic cavitary tuberculosis,caseous pneumonia,military tuberculosis,extrapulmonary tuberculosis,bacillary dysentery,typhoid fever,epidemic cerebrospinal meningitis and epidemic encephalitis B. 2.Slices:pulmonary military tuberculosis,renal tuberculosis,typhoid fever,bacillary tuberculosis,epidemic cerebrospinal meningitis and epidemic encephalitis B. Time required:3 hoursExperiment 1. Gross specimen: primary pulmonary tuberculosis, chronic fibrotic cavitary tuberculosis, caseous pneumonia, military tuberculosis, extrapulmonary tuberculosis, bacillary dysentery, typhoid fever, epidemic cerebrospinal meningitis and epidemic encephalitis B. 2. Slices: pulmonary military tuberculosis, renal tuberculosis, typhoid fever, bacillary tuberculosis, epidemic cerebrospinal meningitis and epidemic encephalitis B. Time required: 3 hours