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.
Mass Communication Specialist 3rd Class Ryan McFarlane/US Navy South Korea news outlet Chosun reported recently that the US has been considering using this armada to test North Korea like never before, by sailing the aircraft carrier north of the Northern Limit Line, the de facto maritime border of North Korea.