a delayed hemolytic transfusion reaction (DHTR), the causative antibody is generally too weak to be detected in routine compatibility testing and antibody screening tests but becomes detectable at what point after transfusion

Why aren't the stains like crystal violet and safranin washed away with water during simple staining?

Consider the last statement in the prompt: "people take such environmental factors into account in their choices when deciding where to live." do all people have a choice as to where they live? what factor plays a key role in this decision and may therefore play a large role in determining quality of life?

Which of the following would be a body response when stepping outside without a coat on a snowy day? a. senaceous glands. secrete more senum b. more liquid is transported by the body to the skin fir insulation c. blood vessels in the skin narrow and contract d. blood vessels in the skin expand