[Observation on the survival and invasibility of Ascaris suum egg preserved at low temperature for 5 years].
Wang
Wei-wei
WW
Chen
Chuan
C
D000818:Animals; D017165:Ascaris suum / Q000472:pathogenicity* / Q000502:physiology*; D015925:Cryopreservation; D007814:Larva / Q000472:pathogenicity / Q000502:physiology; D008168:Lung / Q000469:parasitology; D051379:Mice; D011817:Rabbits