gene fragment/nmn

21.   Some DNA has been recovered from ancient bones, he said, and researchers in Sweden are attempting to compare gene fragments from Neanderthals to that of modern humans.

22.   This test hunts for repeated gene fragments of various viruses instead of a single gene.

n. + fragment >>共 129 个
bone 17.45%
bullet 11.76%
bomb 6.08%
shell 4.90%
sentence 4.90%
gene 4.31%
missile 3.33%
protein 3.33%
skull 1.96%
mortar 1.96%
gene + n. >>共 238 个
therapy 33.39%
mutation 3.17%
experiment 2.85%
sequence 2.54%
research 2.22%
trial 1.90%
test 1.90%
expression 1.74%
fragment 1.74%
technology 1.67%
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