Mannitol Salt Agar (MSA) is a selective and differential medium. The high concentration of salt (7.5%) selects for members of the genus Staphylococcus, since they can tolerate high saline levels.
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Chaplains are pastors to people in the armed forces such as the Navy and Army. Chaplains are also used in hospitals. So they do not necessarily belong to one church but mi â¦ nister to a much larger group. Answer Chaplains can also be found in hospitals, nursing homes, or any other place where the people or patients are unable to attend religious services.