First, most natural forms of biological agents are not highly infectious, and highly infectious seed stock is difficult to obtain.

ECONOMIST: Letters

Eric Rund, a corn farmer, formed Green Flame Energy and offers seed stock, equipment and services to other farmers wishing to grow and utilize biomass energy.

WHITEHOUSE: Bringing Practical Biomass Energy to Rural Communities

Second, seed stock is difficult to process into lethal form.

ECONOMIST: Letters

As I said, anything -- could go for something as repaying for the defraying of cost to move diagnostic and screening equipment or public health infrastructure, the purchase of and development of more antiviral medication, or as we get into the development of a seed stock for a vaccine.

WHITEHOUSE: Press Briefing

Once they select a young company, venture outfits typically furnish seed money that buys 10% to 25% of the stock.

FORBES: Venture vetting

Marin, a former math professor and proficient early-seed investor with a vast network of industry connections, is a master in picking future stock winners in the junior exploration as well the large- to mid-cap energy sectors.

FORBES: After The Gulf: Is Albania The Next Oil Frontier?