ZGEN has said on various occasions that it would’ve made recombinant fibrinogen to go into a kit with its recombinant thrombin if it could have figured out how to do it. Here’s a company that is trying: <a href="http://finance.yahoo.com/news/ProFibrix-Steps-up-prnews-14043348.html" target="_blank">http://finance.yahoo.com/news/ProFibrix-Steps-up-prnews-14043348.html</a>