The following video is part of our "Motley Fool Conversations" series, in which, Andrew Tonner, technology editor and analyst, and David Williamson, health-care editor and analyst, discuss topics across the investing world.

In today's edition, they discuss Cell Therapeutics, which has had a roller coaster of a week. After receiving word that its lead drug candidate, pixantrone, had been accepted for FDA review, shares gained 24%. Unfortunately for investors, the company used the higher share price to announce an equity offering worth $20 million, sending shares plummeting back down. Our Motley Fool analysts discuss the news and examine what approval of pixantrone could mean for investors.

Andrew Tonner and David Williamson own no shares of the companies mentioned here. The Motley Fool owns shares of Dendreon. Try any of our Foolish newsletter services free for 30 days. We Fools don't all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.