WHICH_OF_THE_FOLLOWING_IS_A_SHORT-LIVED_MESSENGER_THAT_ACTS_BY_STIMULATING_A_SOLUBLE_GUANYLYL_CYCLASE,_RAISING_[CGMP]_AND_STIMULATING_PKG??$

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WHICH_OF_THE_FOLLOWING_IS_A_SHORT-LIVED_MESSENGER_THAT_ACTS_BY_STIMULA

1.	WHICH_OF_THE_FOLLOWING_IS_A_SHORT-LIVED_MESSENGER_THAT_ACTS_BY_STIMULATING_A_SOLUBLE_GUANYLYL_CYCLASE,_RAISING_[CGMP]_AND_STIMULATING_PKG??$
A.	NO
B.	NO<sub>2</sub>
C.	NO<sub>3</sub><sup>‚Äö√Ñ√∂‚àö√ë‚àö¬®</sup>
D.	N<sub>2</sub>O
Answer» B. NO<sub>2</sub>