In vitro culture of P. vivax liver satge using HCO4 cell line. This video is taken by Mr. Wiwatchai Chanbanchong, PhD student who's working on the identification of host factors that regulate P. vivax liverstage development. In this video, free merozome of P. vivax started to appeared in the culture with very active moving merozoites inside (on the left). On the right, free merozoites are comming out. This indicate a complete development of liver stage parasite in HCO4 model.