HCV

1. Hepatitis C virus (HCV) is one of the major etiologic agents of liver cancer. HCV is an RNA virus that, unlike hepatitis B virus, is unable to integrate into the host genome.

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]  7 3.  Age_Group  [External Cause]  23 4.  Amino_Acid_Sequence  [Internal Cause]  42 5.  Animal  [External Cause]  5 6.  Bacterium  [External Cause]  238 7.  Behavior  [External Cause]  4 8.  Biologic_Function  [Internal Cause]  36 9.  Body_Location_or_Region  [External Cause]  141 10.  Body_Space_or_Junction  [External Cause]  92 11.  Body_Substance  [External Cause]  107 12.  Body_System  [External Cause]  57 13.  Clinical_Drug  [External Cause]  24 14.  Daily_or_Recreational_Activity  [External Cause]  17 15.  Disease_or_Syndrome  [External Cause]  2907 16.  Educational_Activity  [External Cause]  55 17.  Environmental_Effect_of_Humans  [External Cause]  6 18.  Family_Group  [External Cause]  46 19.  Food  [External Cause]  92 20.  Fungus  [External Cause]  56 21.  Gene_or_Genome  [Internal Cause]  3209 22.  Genetic_Function  [Internal Cause]  213 23.  Geographic_Area  [External Cause]  294 24.  Governmental_or_Regulatory_Activity  [External Cause]  12 25.  Hazardous_or_Poisonous_Substance  [External Cause]  25 26.  Health_Care_Activity  [External Cause]  73 27.  Immunologic_Factor  [Internal Cause]  102 28.  Individual_Behavior  [External Cause]  46 29.  Injury_or_Poisoning  [External Cause]  159 30.  Mental_or_Behavioral_Dysfunction  [External Cause]  164 31.  Neoplastic_Process  [External Cause]  586 32.  Organ_or_Tissue_Function  [External Cause]  126 33.  Organic_Chemical  [External Cause]  494 34.  Organism  [External Cause]  9 35.  Organism_Attribute  [External Cause]  44 36.  Organism_Function  [External Cause]  134 37.  Pathologic_Function  [External Cause]  439 38.  Pharmacologic_Substance  [External Cause]  329 39.  Self_help_or_Relief_Organization  [External Cause]  3 40.  Sign_or_Symptom  [External Cause]  237 41.  Social_Behavior  [External Cause]  21 42.  Tissue  [External Cause]  113 43.  Virus  [External Cause]  391