lentogenic

len·to·gen·ic

(len'tō-jen'ik),
Denoting the virulence of a virus capable of inducing lethal infection in embryonic hosts after a long incubation period and an inapparent infection in immature and adult hosts; the term is used in characterizing Newcastle disease virus, particularly strains used as vaccines administered in water or as sprays, that is, mild or avirulent strains.
[L. lentus, sluggish, inactive, + G. -gen, producing]

lentogenic

only marginally virulent. See also newcastle disease.
References in periodicals archive ?
The different expression of immune-related cytokine genes in response to velogenic and lentogenic Newcastle disease viruses infection in chicken peripheral blood.
This includes viscerotropic velogenic, neurotropic velogenic, mesogenic, lentogenic, and asymptomatic enteric forms.
based on the virulence in infected birds, NDV has been classified into three pathotypes: Lentogenic, which causes mild or in-apparent respiratory disease, Mesogenic, which produces respiratory and nervous signs with moderate mortality and the velogenic, which causes severe gastrointestinal lesions and neurological disease resulting in death of infected birds (14).
In addition, the HN and F proteins from velogenic strains might have enhanced oncolytic potential than those from lentogenic strain as demonstrated by the Vigil et al (15) for F protein.
The lyophilized samples contained La Sota--like strains classified as lentogenic strains.
Molecular characterization of the F gene classified the lyophilized vaccines as derived from lentogenic strains.