Nanjing, this cityso richincultureandnature that one will find themselves alternatingbetweenancientand modern with every step with a canopy of cooling foliageoverhead.
The terms sense and antisense were coined by Paul Zamecnik to show the complementary, double-strand nature of DNA. One strand consisted of alternating patterns of the four nucleotides that make up DNA adenine, cytosine, guanine and thymine and it could be read in order.