DNA molecule. Computer illustration of a double stranded DNA (deoxyribonucleic acid) molecule. DNA is composed of two strands twisted into a double helix. Each strand consists of a sugar-phosphate backbone attached to nucleotide bases. There are four bases: adenine, cytosine, guanine and thymine, which are joined together by hydrogen bonds. DNA contains sections called genes that encode the body's genetic information.
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Creative#:
TOP14563933
Source:
達志影像
Authorization Type:
RM
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須由TPG 完整授權
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N/A
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No
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