What is the most common blood type?

What is crystallographic data processing and structure determination? what are the physical infrastructures of x-ray crystallographic structural biology? who can tell me detailed information? any would be appreciated. in advance!

Aclient’s transdermal fentanyl was discontinued 2hr ago due to adverse effects. which of the following findings is the priority for the nurse to document? a. heart rate b. respiratory rate c. bowel sounds d. activity level

Aclient with pernicious anemia asks why she must take vitamin b12 injections for the rest of her life. what is the nurse's best response? a. "the reason for your vitamin deficiency is an inability to absorb the vitamin because the stomach is not producing sutficient acid." b. "the reason for your vitamin deficiency is an inability to absorb the vitamin because the stomach is not producing sufficient intrinsic factor." c. "the reason for your vitamin deficiency is an excessive excretion of the vitamin because of kidney dysfunction." d. "the reason for your vitamin deficiency is an increased requirement for the vitamin because of rapid red blood cell production."