about 500 tobacco plants established from protoplasts of a normally tobacco-mosaic virus-susceptible cultivar that had been allowed to absorb dna prepared from a resistant cultivar did not show transfer of the virus-resistant gene.a detailed analysis was performed of the disposition of exogenous dna in plant protoplasts , by employing escherichia coli ( 3 ) h-dna and nicotiana glutinosa protoplasts .
C0012854
dna
C0242964
dna