| 摘要 |
<p>DNA sequences encoding full length precursor proteins, which proteins contain both A and B portions of two ricin isotoxins and rich agglutinin, as well as the linker regions have been determined. These DNAs or portions or modifications thereof are expressed in recombinant hosts to obtain the desired proteins or proteins which can readily be converted thereto. One of the rich isotoxins may be related to ricin E.</p> |
