Assertion: surface antigen | /r/HasProperty | rpa
Facets:
Source sentences:
text: The vaccine combines BlueWillow's novel intranasal adjuvant with PBL's recombinant protective antigen (rPA) for anthrax.
text: to develop a solid formulation of recombinant Protective Antigen (rPA) from Bacillus anthracis expressed in Pfenex Expression Technology for delivery with the Glide SDI (solid dose injector).