Table 2 The topmost frequent words for 20 topics after fitting to the ginseng-related articles by Bio-DTM

1

Renal, genom, amino, biosynthesi, clone, cultivar, yeast, cdna, athlet, polymorph

2

Stem, skin, leaf, bone, dri, phenol, marrow, stage, fibroblast, wound

3

Infect, radic, scaveng, heat, virus, substrat, cyp3a4, influenza, hydroxyl, pgp

4

Diet, muscl, cholesterol, fat, glycosid, adipocyt, ppargamma, antibodi, ampk, insulin

5

Fraction, polysaccharid, ferment, pesticid, residu, column, frg, transit, neutral, pectin

6

Strain, soil, genus, nov, warfarin, polar, bacterium, minor, dsm, genom

7

Cam, tcm, irradi, hair, radiat, sperm, exhaust, alkalin, train, contamin

8

Channel, ca2, cardiac, relax, oocyt, contract, muscl, eno, lpa, ion

9

Injuri, women, fatigu, myocardi, estrogen, ischemia, menopaus, syndrom, cerebr, ischem

10

Pharmacokinet, ion, formula, prescript, ppd, rhizom, ppt, urin, raw, excret

11

Cultiv, temperatur, wild, seed, white, embryo, genet, flower, somat, pathogen

12

Cancer, lung, colon, intak, metastasi, colorect, ventricular, pulmonari, failur, mmp9

13

Diabet, intestin, insulin, toler, digoxin, absorpt, pancreat, beta, grg1, morphin

14

Apoptosi, macrophag, nfkappab, ros, cox2, cancer, mitochondri, angiogenesi, arrest, p38

15

Transform, medium, hairi, transgen, cold, degrad, spectroscopi, biomass, ml1, callus

16

Breast, vaccin, adjuv, discrimin, prostat, skin, fingerprint, antibodi, metabolom, antigen

17

Pressur, hepat, oil, ethanol, metal, aqueous, allerg, hepatotox, fibrosi, asthma

18

Platelet, lymphocyt, spleen, aggreg, pain, cisplatin, nrf2, antiplatelet, milk, camp

19

Berri, behavior, alcohol, depress, memori, swim, ach, learn, avoid, erectil

20

Neuron, cognit, memori, hippocampus, drink, behavior, glutam, energi, astrocyt, task