Amarantus Bioscience Holdings Inc (AMBS)

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$AMBS MANF -Medscape Article -Orphan drug approval. In December 2014, the US Food and Drug Administration (FDA) gave orphan drug approval to mesencephalic astrocyte-derived neurotrophic factor as a treatment for retinitis pigmentosa. The naturally occurring protein works by inhibiting apoptosis. "That's exciting because it's bringing cells back to life," says Dr Bhavsar.

http://www.medscape.com/viewarticle/838877_2