It seems alot of posters are looking at this as a stock deal.
Call me naive but since LFB's principal business is production and distribution of plasma proteins which they now obtain through blood fractionation: see in transgenics a vastly superior method of production. They identify GTCB as the leader in this field and form a partnership. They decide which proteins will prove most beneficial. GTCB produces them. A marriage made in heaven. The stock is the marriage licence, which keeps GTCB from running arround too much. :)