Hfr 菌株；高频重组菌株Hfr strain
高频率high frequency
高频重组供体hfr donor hfr
高频重组菌株high frequency of recombination strain, Hfr strain
高频重组high frequency of recombination, Hfr
高频重组hfr
高频重组high frequency of recombination, Hfr
高频重组菌株high frequency (of ) recombination strain