Probiotics such as bifidobacteria are typically used in cases when a disease occurs or might occur due to a kill-off of normal bacteria. For example, treatment with antibiotics can destroy disease-causing bacteria, but also normal bacteria in the GI (gastrointestinal) and urinary tracts.
The 3-place Hiller Model 360, military H-23 Raven, was based on the U.S. Navy UH-12, which was first flown in 1948. The H-23 Raven performed as a utility, observation, and MedEvac helicopter during the Korean war.
105mm Howitzer. A favored support gun, the 105mm howitzer used in Vietnam had seen action in World War II. Modified to improve field mobility, the guns served admirably throughout the Vietnam conflict. An eight-man crew operated the 105, which could be towed behind a 6x6 truck or carried into position by helicopter.he Bell UH-1 helicopter, popularly known as the Huey, was the workhorse aircraft for U.S. forces in Vietnam. Well adapted for jungle warfare, the Huey could fly at low altitudes and speeds, land in small clearings, maneuver to dodge enemy fire, and carry an array of powerful armaments.