HBV

1. Hepatitis B virus (HBV) is a common worldwide blood-borne pathogen. Chronic hepatitis B can progress to an inactive carrier state, and then, in some patients, give rise to cirrhosis and cancer of the liver, leading to death.

1. Method:
   We use Metamap to find biological semantics in the literature. TF and TF-IDF are used to evaluate the importance of entities respectively. TF represents word frequency, and IDF in TF-IDF represents inverse document frequency, which can be used to filter high-frequency words that cannot represent a certain field. Here, the TF-IDF calculation is to construct the semantics of a carcinogenic viruses and eight carcinogenic viruses into text respectively for calculation.

Please select a semantic type. The number shows how many sub-semantic types the semantic type contains.
Note:The larger the number of sub-semantic types is,the more time it will take to load data.

1.  Acquired_Abnormality  [External Cause]  28 2.  Activity  [External Cause]  6 3.  Age_Group  [External Cause]  26 4.  Amino_Acid_Sequence  [Internal Cause]  45 5.  Animal  [External Cause]  7 6.  Bacterium  [External Cause]  244 7.  Behavior  [External Cause]  2 8.  Biologic_Function  [Internal Cause]  33 9.  Body_Location_or_Region  [External Cause]  118 10.  Body_Space_or_Junction  [External Cause]  79 11.  Body_Substance  [External Cause]  108 12.  Body_System  [External Cause]  50 13.  Clinical_Drug  [External Cause]  30 14.  Daily_or_Recreational_Activity  [External Cause]  14 15.  Disease_or_Syndrome  [External Cause]  2456 16.  Educational_Activity  [External Cause]  50 17.  Environmental_Effect_of_Humans  [External Cause]  8 18.  Family_Group  [External Cause]  52 19.  Food  [External Cause]  90 20.  Fungus  [External Cause]  50 21.  Gene_or_Genome  [Internal Cause]  3547 22.  Genetic_Function  [Internal Cause]  230 23.  Geographic_Area  [External Cause]  298 24.  Governmental_or_Regulatory_Activity  [External Cause]  11 25.  Hazardous_or_Poisonous_Substance  [External Cause]  24 26.  Health_Care_Activity  [External Cause]  55 27.  Immunologic_Factor  [Internal Cause]  121 28.  Individual_Behavior  [External Cause]  39 29.  Injury_or_Poisoning  [External Cause]  134 30.  Mental_or_Behavioral_Dysfunction  [External Cause]  127 31.  Neoplastic_Process  [External Cause]  574 32.  Organ_or_Tissue_Function  [External Cause]  116 33.  Organic_Chemical  [External Cause]  475 34.  Organism  [External Cause]  8 35.  Organism_Attribute  [External Cause]  46 36.  Organism_Function  [External Cause]  119 37.  Pathologic_Function  [External Cause]  398 38.  Pharmacologic_Substance  [External Cause]  288 39.  Self_help_or_Relief_Organization  [External Cause]  4 40.  Sign_or_Symptom  [External Cause]  166 41.  Social_Behavior  [External Cause]  16 42.  Tissue  [External Cause]  99 43.  Virus  [External Cause]  365