| 摘要 |
<p>Plasmids and bacterial strains useful for the production of enterotoxoids and antigens, particularly the plasmids and bacterial strains pEFK-600, -700, -800 and pEBK620: E. coli K12 5K/pEFK-600, -700 + pRK248cIts, -800 + pRK248cIts and E. coli K12 5K/pEBK-620: E. coli K12 5K/pEFK-600 + K88(AB), -700 + pRK248cIts + K88(AB), -800 + pRK248cIts + K88(AB) and E. coli K12 5K/pEBK-620 + K88(AB,AC, AD). The enterotoxoids and/or antigens obtained may be used in the production of vaccins.</p> |
