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.
Confidence votes 14. The Mil Mi-26 of the largest and most powerful helicopter to enter full scale production in the world. in 2002 one was shot down by Chechen rebels, it had around 150 troops on board, although maximum capacity is rated as 80. 3. Eva May.