Negative test of LPS contamination. The DAM- and NM-preparations used in this study were tested with an endpoint chromogenic LAL-assay for LPS contamination at a concentration of 50μg/ml and analyzed at a wavelength of 405 nm. LPS standards with a concentration range between 0.1-1.0 EU/ml were tested positive, whereas the DAM and NM-preparations were tested negative for LPS.
Oberländer et al. BMC Neuroscience 2011 12:116 doi:10.1186/1471-2202-12-116