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In the laboratory samples may be prepared by treating acetylene with a solution of lithium in ammonia, on −40°C, with creation of adduct of Li 2 C 2 ·C 2 H 2 ·2NH 3 that decomposes in stream of hydrogen at room temperature giving white powder of Li 2 C 2. C 2 H 2 + 2 Li → Li 2 C 2 + H 2. Samples prepared in this manner generally are ...
Ligation-independent cloning (LIC) is a form of molecular cloning that can be performed without the use of restriction endonucleases or DNA ligase.The technique was developed in the early 1990s as an alternative to restriction enzyme/ligase cloning. [1]
Learn how to download and install or uninstall the Desktop Gold software and if your computer meets the system requirements.
A biologics license application (BLA) is defined by the U.S. Food and Drug Administration (FDA) as follows: . The biologics license application is a request for permission to introduce, or deliver for introduction, a biologic product into interstate commerce (21 CFR 601.2).
The companies claimed, among other things, that the health warnings violated their free speech rights by compelling the companies to endorse the U.S. government's anti-smoking message through ...
Download all attachments in a single zip file, or download individual attachments. While this is often a seamless process, you should also be aware of how to troubleshoot common errors. Emails with attachments can be identified with Attachment icon in the message preview from the inbox. Download all attachments
In the mid-1980s, the GNU project produced copyleft free-software licenses for each of its software packages. An early such license (the "GNU Emacs Copying Permission Notice") was used for GNU Emacs in 1985, [5] which was revised into the "GNU Emacs General Public License" in late 1985, and clarified in March 1987 and February 1988.
Health officials are warning of waterborne disease risks associated with splash pads and fecal matter after finding that more than 10,000 children and adults have been sickened over 25 years.