https://www.cgrpinhibitor.com/2017/01/19/we-detected-a-similar-number-of-intracellular-ld-after-2-h-in-untransfected-mutant-and-wild-type-hif-1a-transfected-cells-suggesting-that-hif-1a-amount-has-no-role-in-infectivity-of-ld/