Based on the inspiration from Hetu and Luoshu,a principle diagram of pathogenicity of pathogenic factors was established.Accordingly,the inner correlations between pathogenic factor type and biological factors,and between pathogenic factors and host were analyzed.Mechanism of pathogenesis was discussed with five representative cases.The result indicated that effect of biological factors on host could be proved only with the performance of internalization conditions of biological factor and host.The reciprocal transformation between biological factors and pathogenic factors was decided by interaction and state of co-existed factors and host.The results suggested that it is a better and attractive choice to regulate and optimize the host’s state in practice than direct elimination of pathogens with antibiotics.
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