Experts create transparent fish to study cancer:

Researchers at Children’s Hospital Boston have created a zebrafish that is transparent throughout its life and hence could be used to examine various human processes.
Zebra fish, being genetically similar o humans, prove to be good models for human biology and disease.
The new fish created by Richard White, a clinical fellow in Stem Cell Program at Children’s, may allow scientists to directly view its internal organs , and observe processes like tumour metastasis and blood production after bone-marrow transplant in a living organism .
According to White, this breakthrough may just out do the classical method of killing and dissecting the animal after allowing it to get the disease. Hasid that while Zebrafish embryos may enable the researcher to study disease in living organism. Since they are transparent, but zebrafish adults are opaque. His first experiment on the zebrafish examined how a cancer spreads. “The process by which a tumour goes from being localized to widespread and ultimately fatal is the most vexing problem in oncologist face. We don’t know why cancer cells decide to move away from their primary site to other parts in the body,” said White.