HELP Which of the following are improvements in recent society that have lead to
decreased mortality rates? (Choose all that apply.)
medical care
sanitation
better schools
food production

I would say all except better school. While that can indirectly impact mortality rates, I feel like it doesn't play as big a role as medical care, sanitation, and food production.

characterization of nanoparticles is a critical step in nanomaterial production as it provides information of dimension, morphology, surface charge, distribution and degree of surface functionalization.

this protocol describes a detailed procedure for intracellular flow cytometry staining.