(biology) A screening technique for the rapid detection of recombinant bacteria in vector-based molecular cloning experiments. DNA of interest is ligated into a vector, which is then inserted into a host cell; these are grown in the presence of X-gal. Cells transformed with vectors containing recombinant DNA will produce white colonies; cells transformed with non-recombinant plasmids (i.e. only the vector) grow into blue colonies.

plural of screen door

plural of screen test

plural of screen reader

plural of screen-saver

plural of screen name

plural of screeching frog

Alternative form of rood screen.

plural of screech-hawk

Third-person singular simple present indicative form of screel