Then / Now

Stem cell therapies are not new. Doctors have been performing bone marrow stem cell transplants for decades. But when scientists learned how to remove stem cells from human embryos in 1998, both excitement and controversy ensued.

The excitement was due to the huge potential these cells have in curing human disease. The controversy centered on the moral implications of destroying human embryos. Political leaders began to debate over how to regulate and fund research involving human embryonic stem (hES) cells.

Newer breakthroughs may bring this debate to an end. In 2006 scientists learned how to stimulate a patient's own cells to behave like embryonic stem cells. These cells are reducing the need for human embryos in research and opening up exciting new possibilities for stem cell therapies.

Related Posts:

  • Differences between F+ x F– and Hfr x F– conjugation The major differences between F+ x F– and Hfr x F– conjugation systems are summarized in Table  … Read More
  • Restricted Transduction of Bacterial genome  Restricted transduction is mediated by certain temperate bacteriophages, like the λ-phage (lambda phage) of E. coli, which enters into a lysogenic relationship with the host bacterium. This type of phages normally doe… Read More
  • Features of interrupted mating between Hfr x F– cells of E. coli The important features of interrupted mating between Hfr x F– cells of E. coli are briefly mentioned below: (a) Transfer of Hfr chromosome to P cell begins at a particular point on chromosome determined by the site of… Read More
  • F-Plasmids and Sexduction Just as F-plasmids can be integrated into the chromosome, so they can also be occasionally excised from the Hfr-chromosome to produce a free plasmid. Sometimes, the excision does not occur in a precise manner by exact rever… Read More
  • The F-Plasmid F-Plasmid: The F-plasmid of E. coli is a self-transmissible, low copy-number extra-chromosomal genetic element mediating its own transfer. The transfer process requires products of a good number of genes (about 40) which a… Read More

0 Comments:

Powered by Blogger.

Visitors

216841
Print Friendly Version of this pagePrint Get a PDF version of this webpagePDF


 download University Notes apps for android

Popular Posts

Flag Counter