1. Covalent attachment of lysine to commercial restriction endonucleases

   • Lemuel B. Wingard
   • Kimberly A. Egler

   OriginalPaper Pages: 131 - 142

2. Interaction of spermine, spermidine, and putrescine with heparin bound to sepharose beads

   • B. Tadolini
   • L. Cabrini

   OriginalPaper Pages: 143 - 152

3. Representative applications of heparin-sepharose in the removal of polyamines from biological materials

   • B. Tadolini
   • L. Cabrini
   • A. M. Sechi

   OriginalPaper Pages: 153 - 159

4. Immobilization of the restriction endonuclease PstI

   • Pratap Singh

   OriginalPaper Pages: 161 - 172

5. Conformational studies of soluble and immobilized frog epidermis tyrosinase by fluorescence

   • A. Manjon
   • J. A. Ferragut
   • J. L. Iborra

   OriginalPaper Pages: 173 - 185

6. Molar absorptivity and a _1cm ^1% values for proteins at selected wavelengths of the visible and ultraviolet regions. XXIII

   • Donald M. Kirschenbaum

   OriginalPaper Pages: 187 - 206

7. Book review

   • Ronald Wetzel

   BookReview Pages: 207 - 208