Another set of derivatives that actually do not contain opium but that are considered opiates are synthetics which are synthesized versions of drugs that are derived from opium. Finally, there are also semi-synthetics which are partially synthetic and partially derivatives of opium.
Lactic Acid Yeast provides natural lactic acid to help establish proper pH balance in the gut and supports a healthy intestinal environment.1  Promotes a healthy lower gastrointestinal pH.actic Acid Yeast provides natural lactic acid to help establish proper pH balance in the gut and supports a healthy intestinal environment. 1  Promotes a healthy lower gastrointestinal pH.
yeast artificial chromosome (YAC) CLONING VECTOR based on YEAST chromosome, with a yeast TELOMERE at each end of the linear molecule, a CENTROMERE, a sequence for autonomous REPLICATION, allowing propagation in yeast, a selectable GENETIC MARKER for yeast and a POLYLINKER. YAC vectors typically accommodate DNA fragments up to 600kb in size.