What organ controls the heartbeat

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!

4. you are asked to make 125 grams of a 7% antifungal cream using tolnaftate powder and eucerin cream. how many grams of tolnaftate powder are needed? round to the nearest hundredths (w/w)

The first step in culturally sensitive counseling is to obtain the education and guidance necessary to understand that culture and to process any feelings that could interfere with counselor empathy: true or false