| 摘要 |
<p>A method for assaying for the presence or quantity of a suspect nucleic acid sequence of at least ten bases in a suspect sample contg. single stranded DNA or RNA, comprises: (a) contacting suspect sample with a molecular genetic probe comprising a modified nucleic acid sequence contg. complementary single stranded DNA or RNA hybridisable with the suspect nucleic acid sequence, to form a hybridised complex, said modified nucleic acid sequence having been formed by alkylation, sulphonation, nitrosonation, or nitrophenylation; (b) removing non-hybridised nucleic acids to form a first reaction mixt. consisting essentially of the hybridised complex; (c) contacting the first reaction mixt. with antibodies specific to the modified portion of the modified nucleic acid sequence of said molecular genetic probe to form an antibody bound complex; (d) adding a labelling agent adapted to signal the presence of said antibodies; and (e) removing unreacted labelled antibody to form a second reaction mixt. which is essentially free of unreacted labelled antibody; (f) measuring the second reaction mixt. for the presence and/or extent of the presence of the labelled antibodies as an indication of the extent or presence of the suspect nucleic acid sequence in the sample.</p> |
