BioSteel was a trademark name for a high-strength fiber-based material made of the recombinant spider silk-like protein extracted from the milk of transgenic goats, made by defunct Montreal-based company Nexia Biotechnologies, and later by the Randy Lewis lab of the University of Wyoming and Utah State University.
The purified silk proteins could be dried, dissolved using solvents (DOPE formation) and transformed into microfibers using wet-spinning fiber production methods.
[4] Nexia is the only company that has successfully produced fibers from spider silk expressed in goat's milk.
In 2009, two transgenic goats were sold to the Canada Agriculture Museum after Nexia Biotechnologies went bankrupt.
[6] The U.S. Navy has plans to turn this silk into a tool for stopping vessels by entangling their propellers.