1. Amebiasis is caused by Entamoeba histolytica and is transmitted through contaminated food, water, or direct person-to-person contact. It commonly involves the cecum and ascending colon, causing dysentery and liver abscesses. Metronidazole is the treatment. 2. Tuberculosis of the intestines is caused by Mycobacterium tuberculosis ingestion. It causes chronic inflammation and granuloma formation in the terminal ileum and lymph nodes. Morphology shows ulceration, granulomas, and fibrosis. 3. Typhoid fever is caused by Salmonella typhi or Salmonella paratyphi. It involves the terminal ileum,