For in vivo CoQ repletion, littermates were randomly injected (ip) on P9 with 160 mg/kg CoQ10 (in intralipid) or equal volume vehicle (intralipid alone). CoQ10 (Sigma-Aldrich C9538) was dissolved in 100% ethanol and heated at 65°C for 5 minutes. Dissolved CoQ10 was then added to intralipid (Sigma-Aldrich I141) (2.9 mM) and heated for 5 minutes at 65°C (14 (link)). For dose-response testing, mouse pups were injected (ip) on P9 with 20, 40, 80, or 160 mg/kg CoQ10 (in intralipid) and assessed on P10. Equal volume vehicle (intralipid alone) served as a control injectate.