Fascinating and tremendously exciting!
Speaking of biologics - Leicester University Hospitals have just set up a biologics team which will become engaged in "printing" vaccines etc in just the way you describe. I was very tempted to apply for one of the jobs they have just advertised.
Thinking about the new opportunities these ideas will bring for the blockchain, I see a major problem around adoption. Looking at the challenges that #tenkminnows are facing within Steem and the parallel ones I am meeting outside the blockchain as I try to engage people for the Leicester #steemcampuk event, awareness raising, education and community development will be a critical aspect.