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. Author manuscript; available in PMC: 2018 Feb 15.
Published in final edited form as: Innate Immun. 2017 Jan 1;23(3):307–318. doi: 10.1177/1753425917694084

Fig. 6.

Fig. 6

Tris/EDTA pre-treatment increased detection by LAL assay of endotoxin-like activity from house dust collected at each of several different locations. Each location indicated was sampled (see Methods) in each of 10 different homes. An equal portion of each of the filters containing collected dust was treated with either 100 mM Tris-HCl/10 mM EDTA or PFW and tested by LAL assay. (A) Mean ± SEM of endotoxin activity of PFW vs. Tris/EDTA extracts from each location, expressed as EU/mg dust extracted. The differences are statistically significant (p<0.01) for each of the four sites of collection. (B) Relative activity of Tris/EDTA pre-treatment as compared to PFW of each collected house dust, expressed as EU/mg dust extracted.