Instrumentation and ionization methods for the analysis of biological materials by mass spectrometry; high resolution mass spectrometry and accurate mass measurements of biopolymers using MALDI-TOF; a novel geometry mass spectrometer, the quadrupole orthogonal acceleration time-of-flight instrument, for low femtomole/attomole range biopolymer sequencing; affinity techniques combined with mass spectrometry; screening molecular diversity using pulsed ultrafiltration mass spectrometry; mass spectrometry in immunology - identification of a minor histocompatibility antigen; strategies for the rapid characterization of recombinant and native proteins by mass spectrometry; mass spectrometry in drug discovery; analysis of glycoproteins; analysis of phosphorylated protein by mass spectrometry; mass spectrometry-based approaches towards the study of regulated biological systems; gels in vacuo? a minimalist approach for combining mass spectrometry and polyacrylamide gel electrophoresis; studying noncovalent interactions by electrospray ionization mass spectrometry; protein-protein and protein-ligand interactions studied by hydrogen/deuterium exchange electrospray mass spectrometry; characterization of oligonucleotides by electrospray mass spectrometry; methods and applications of sizing DNA by matrix-assisted laser desorption/ionization mass spectrometry; network-based bioinformatics in protein mass spectrometry.