APOE and infection: Whereas 95 ± 3% of parasites within PEMs were qualitatively LPG-negative at 72 hours after infection, in both BMMs and BMDCs a much higher percentage of parasites retained LPG expression with 65 ± 5% of parasites in BMMs (P < 0.0001) and 37 ± 14% of parasites in BMDCs retaining LPG (P < 0.001) (Fig 5B and 5C).