1 Table of Contents: “... Lysosomes -- 8 Brain Nuclei -- 9 Membrane Markers of the Nervous System -- 10 Microtubules in the Nervous...”

2 Table of Contents: “... of the Nerve Growth Factor Proteins -- 22 Regulation by Amino Acids of Protein Synthesis in a Cell-Free System...”

3 “... identification of cell membrane receptors. The existence of re­ ceptor substances on the surface of cells...”

4 “.... Enzymes are the stuff of life, and no living cell can be without them. They are the results of many...”

5 “..., breakdown has many modulatory functions: it serves to activate and inactivate enzymes, modulate membrane...”