In order to create a vaccine for the A.E. Virus, Annex 1 heads to Mars. Akari and the other crew members try to enjoy their time on the ship before they land on Mars for the life-threatening mission.
within other host organisms,
la comodidad de un cuerpo huésped.
la comodidad de un cuerpo huésped.
chez les hôtes
qui leur conviennent.
....all'interno degli 
organismi che li ospitano,
dentro de outros hospedeiros,