Comment on

• Ribozyme cleaves rex/tax mRNA and inhibits bovine leukemia virus expression.

  Cantor GH, McElwain TF, Birkebak TA, Palmer GH. Cantor GH, et al. Proc Natl Acad Sci U S A. 1993 Dec 1;90(23):10932-6. doi: 10.1073/pnas.90.23.10932. Proc Natl Acad Sci U S A. 1993. PMID: 7504287 Free PMC article.
• Importance of independence in ribozyme reactions: kinetic behavior of trimmed and of simply connected multiple ribozymes with potential activity against human immunodeficiency virus.

  Ohkawa J, Yuyama N, Takebe Y, Nishikawa S, Taira K. Ohkawa J, et al. Proc Natl Acad Sci U S A. 1993 Dec 1;90(23):11302-6. doi: 10.1073/pnas.90.23.11302. Proc Natl Acad Sci U S A. 1993. PMID: 8248243 Free PMC article.