Zinder Lab Finding mmoles Ch4/L of culture Measuring Ethylene of Perkin-Elmer GC Mmedia Plating Ms. barkeri 227 Preparing 83 mM Titanium (III) Citrate pH 8.0 Whole Cell Nitrogenase Assay Huttenlocher/Horwitz Lab Konisky Lab ADK Assay Methanothermus fervidus Rich Media Polyacrylamide gels Silverstaining of SDS gels