Word: celling
(lookup in dictionary)
(lookup stats)
Dates: during 1970-1979
Sort By: most recent first
(reverse)
...penicillinase, a natural product of the bacteria, serves as a carrier and marker, transporting the insulin to the cell surface where it normally resides. At the surface, the penicillinase and insulin can be exposed to certain radioactively labeled substances which attach specifically to these two proteins. Bacterial cells which are successfully manufacturing the protein are thus identified...
...short insulin segments were hidden in large bacterial cell proteins during synthesis and safely escorted from the cells but the group has had problems putting the two insulin segments together in the proper three-dimensional conformation...
...working in the P-3 laboratory at the Biolabs. Doty's group is tackling the vast problem of how genes are turned on and off--using gene splicing as a research tool rather than an end in itself. She has been studying RNA--one of the intermediate steps the cell employs in translating the DNA code--for 22 years. Whereas Gilbert has a definite medical goal pushing him on, Doty must stab in the dark and hope to come up with a lead which will help scientists to understand this most basic of cellular processes...
Gene splicing is a technique for recombining genetic material in which the tape is DNA, a molecule which codes in a four-letter alphabet for the various proteins which are vital for the, functioning of every cell. Researchers use a chemical scalpel--restriction enzymes--which attack DNA at specific sites, breaking it and exposing two "sticky" ends to which a new piece of DNA--a gene--can be attached...
Genes from other organisms [3] are inserted into the DNA of E. coli bacteria which copies and decodes DNA rapidly. A ring of DNA--a plasmid--which is transferred between bacteria, is used for the incorporation procedure. It is easily isolated from a bacterial cell [1], cut open [2] and used as a receptor for a foreign gene [4]. The plasmid then carries the inserted DNA into a cell [5] where many copies can be "cloned...