Stem Cell Therapy is another hot topic on genomic studies. Although Congress enacted a ban in 1995 on federal financing for research in human embryos, these restrictions have not stopped researchers in the United States and elsewhere from using private funding to create new embryonic cell lines and undertaking research with them. Stem cells are unspecialized cells that can make specialized body cells, and at the same time, make copies (replicate) of themselves. Embryonic stem cells originate from the embryo at a very early stage in development (called the blastocyst). The stem cells in the blastocyst continue to develop into a person or animal. Adult stem cells come from the umbilicalcord or from the blood, bone marrow, skin or other tissues. Medical researchers are investigating the use of stem cells to repair or replace damaged body tissues. This is because stem cells are less likely than other, foreign cells, to be rejected by a patient's immune system when they are placed in the body. Embryonic stem cells have the ability to develop into every type of tissue (skin, liver, kidney, etc) found in an adult human, however, adult stem cells do not have the same ability. Stem cells have been used in experiments to form cells of the bone marrow, heart, blood vessel emias and leukemia. There has been much debate nationally about the use of embryonic stem cells, especially creating human embryos, for use in experiments.
Prior to the development of real-time PCR technology, quantitative measurements required someone to set up multiple PCR reactions in order to capture a PCR product at a linear phase of amplification. Separation and quantitation of the PCR products was then done by gel electrophoresis,or HPLC. These experiments are quite laborious and the number of manipulations required to achieve proper quantitation increased the likelihood of introducing error;.the development of real time PCR instruments that could measure PCR products at each thermocycle enhanced the ease, accuracy, and reproducibility of quantitative PCR. Real-time PCR technology is highly flexible and there are many alternative instruments and fluorescent probe systems that have been developed recently. The decreased hands-on time, increased reliability and improved quantitative accuracy of RT PCR methods have contributed to the adoption of real-time PCR technology for a wide range of new applications. These include 1) validation of gene expression data obtained by microarray analysis, 2) measurement of DNA copy number, 3) detection and quantitation of viral particles and potentially lethal microorganisms, 4) mutation and SNP analysis, and 5) measurement of residual diseases in patients.

Over a decade, quantitative real-time PCR plays an important step for the validation of expression data generated. Beginning in the 1990's, umbilical cord blood stem cells have been used to treat heart and other physical problems in children who have rare metabolic conditions. This has been facilitated by the development of real-time PCR instruments that measure the amount of PCR product produced at each step of the reaction or in "real time".  These machines support a variety of chemistries for template detection including SYBR green dye intercalation as well as hybridization probes, hydrolysis probes, and molecular beacons. SYBR green is currently the most popular real time PCR method due to its relative ease and reliability. Primers sets may be designed using standard primer-design algorithms without any modification. As with all PCR amplifications, the specific reaction conditions for each set must be optimized, particularly primer concentration, annealing temperature, and magnesium chloride concentration;.many primer sets fail to amplify the desired template, despite all attempts to optimize the reaction conditions. A new set of primers must be designed and synthesized. Considering the time and cost of designing and optimizing primer sets, along with the relatively large number of candidate genes that are identified by microarray studies, the development of a central repository for primer sets, reaction conditions, and even the actual oligonucleotides, would benefit all investigators involved in genomics and other types of experiments., Applied Gene offers the service for designing primers, project consultation, and performing real-time PCR under universal conditions.