Heat-map illustrating the change of concentrations of 18 LPC species during CAP.

Red indicates low concentrations and green high concentrations. The concentration values have been transformed into a Z-Score, which indicates how many standard deviations a concentration is from the mean of all values in each row. A small uniform value of 0.167 μM was used in instances of less than three samples having concentrations above the lowest level of quantification, (LPC 18:3 at Day 2; LPC 18:4, LPC 20:0, LPC 20:1, and LPC 20:2 until Day 2). Abbreviations: LPC, lysophosphatidylcholine; CAP, community-acquired pneumonia.