The time required for precessing spins to align with the constant external field to 63% of the maximum possible strength is
a. spin density (r).
b. repetition time (TR).
c. echo time (TE).
d. spin-lattice relaxation time (T1).
d. spin-lattice relaxation time (T1).
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ASHP risk level ________ includes products with the least potential risk of product integrity and patient safety, whereas risk level ________ includes products with the greatest risk
Fill in the blank(s) with correct word
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The ____ period includes weeks 2–8 of pregnancy.
A. embryonic B. cleavage C. blastocysts D. fetal
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