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31. A white colony mutant, 1-40-271, was normal in sporulation and spore germination, but defective in appressorium development and totally lost in pathogenicity.

32. From a scientific perspective, the opportunity to watch virus evolution in real time may provide us with invaluable information on the factors that determine pathogenicity and/or transmissibility.

33. In order to study the pathogenicity and pathology of Eimeria stiedai, 25 young rabbits were infected artificially by purified sporulated oocysts of Eimeria stiedai (E. stiedai).

34. The inoculation and pathogenicity studies indicated that the incidence of stem blight was 100%.

35. Whether the expression levers of the Chitinase is related to the differences of biological and physiological aspects such as pathogenicity among different strains still remains unclear.

36. Virulence The relative pathogenicity of an organism; its ability to cause disease.

37. Therefore, the pathogenicity of APMV-1 in vivo could be determined by identification of characteristics of F and HN genes in vitro.

38. The agreement between Dot - ELISA of JEL 4 ECP and pathogenicity to animal was up to 100 %.

39. Avian influenza is caused by an orthomyxovirus, or influenza virus. Viruses in this group vary widely in their pathogenicity or virulence.

40. Clostridial enteritis of pigs with different ages was identified from4 farms by the bacteriology, determination of the toxin and its pathogenicity as well as clinical signs.

41. Objective To study the relationship of Y. pseudotuberculosis serologic type, its origin and pathogenicity.

42. Research progress of incursion approach, pathogenicity mechanism[http://sentencedict.com], disease resistance of fusarium wilt of gourd vegetable are summarized. And the control status is introduced.

43. This paper reported symptoms of discolored rice grains, species and their pathogenicity on rice caused by the Curvularia.

44. Aim To testify the pathogenicity of coccoid Helicobacter pylori in vivo.

45. Objective To detect the proteinase activity of Malassezia furfur strains isolated from various specimens and to study the relationship between the proteinase activity and pathogenicity.

46. Pathogenicity test at saturated humidity showed that the third instar was very susceptible to fungal infection.

47. Genes involved in interactions among plants and pathogens, pathogenicity related genes, and the genes encoding bactericidal peptide, which have been studied in order to promote resistance to soft rot.

48. Medium had relation to biological characters including colony morphology, growth rate, sporangium production and pathogenicity of Phytophthora capsici Leonian.

49. Objective To the pathogenicity, susceptibility to antifungal drugs, and electrophoretic karyotype of clinically uncommon pathogenic yeasts.

50. Methods and Results To review the literatures, and summarize the contents from the overview, pathogenicity, virulent genes and possible mechanisms of coccoid conversion in H. pylori .

51. DNA insertional mutagenesis is one of the most effective ways to identify pathogenicity genes of phytopathogenic fungi.

52. We compared the check rate of peptostreptococu anaerobius in 44 cases of acute pulpitis and 17 chronic cases, and analysed the pathogenicity of this bacteria in different types of pulpitis.

53. Objective To observe pathogenicity and ecology of Lymantriidae larvae living on bamboos.

54. And we speculated that P3 may affect the symptom by its involvement in RNA replication and also functioned as an pathogenicity determinant.

55. Ebola hemorrhagic fever is a newly-emerged disease that causes high mortality. Its pathogen is the ebola virus, but the mechanism of pathogenicity for ebola virus is still unknown.

56. The research was to investigate melanin characters and its effect on the pathogenicity of Curvularia lunata in maize.

57. Objective To investigate the pathogenicity of Scopulariopsis brevicaulis and to discuss the pathogenesis of systemic mycosis.

58. The term pathogenicity denotes the ability of a parasite to cause disease.

59. This article summarized the latest progress of the etiology, epidemiology, pathogenicity, molecular biology and diagnostic methods on Avian paramyxovirus type 2(PMV 2).