Complex sentence: Pick C1 (NPC1) cholesterol transporter appears to be essential for Ebola virus infection: a series of independent studies have presented evidence that Ebola virus enters human cells after binding to NPC1.
Split into simpler sentences: Pick C1 (NPC1) cholesterol transporter appears to be essential for Ebola virus infection. A series of independent studies have presented evidence that Ebola virus enters human cells after binding to NPC1.