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animals (1350) 1350
urochordata - chemistry (508) 508
index medicus (436) 436
biochemistry & molecular biology (405) 405
humans (301) 301
molecular sequence data (292) 292
urochordata - genetics (259) 259
amino acid sequence (234) 234
chemistry, medicinal (234) 234
urochordata - metabolism (232) 232
molecular structure (228) 228
phylogeny (186) 186
urochordata (166) 166
chemistry, organic (157) 157
ascidian (154) 154
base sequence (153) 153
pharmacology & pharmacy (144) 144
cell biology (138) 138
ciona-intestinalis (119) 119
plant sciences (114) 114
urochordata - physiology (112) 112
magnetic resonance spectroscopy (108) 108
antineoplastic agents - pharmacology (106) 106
urochordata - embryology (104) 104
sequence homology, amino acid (102) 102
mice (97) 97
male (95) 95
research (95) 95
female (94) 94
developmental biology (93) 93
alkaloids - chemistry (89) 89
article (89) 89
tunicate (89) 89
marine biology (88) 88
zoology (88) 88
analysis (87) 87
biology (87) 87
evolution (87) 87
genetics & heredity (86) 86
cloning, molecular (85) 85
evolutionary biology (80) 80
stereoisomerism (80) 80
antineoplastic agents - chemistry (79) 79
urochordata - microbiology (79) 79
sequence alignment (75) 75
sequence analysis, dna (75) 75
evolution, molecular (73) 73
alkaloids (72) 72
drug screening assays, antitumor (72) 72
urochordata - cytology (70) 70
antineoplastic agents - isolation & purification (69) 69
chemistry, applied (69) 69
nuclear magnetic resonance, biomolecular (68) 68
proteins (68) 68
life sciences (67) 67
ascidians (66) 66
chromatography, high pressure liquid (66) 66
halocynthia-roretzi (66) 66
expression (65) 65
urochordata - enzymology (65) 65
urochordata - growth & development (62) 62
alkaloids - pharmacology (59) 59
structure-activity relationship (59) 59
fertilization (56) 56
species specificity (56) 56
tunicates (56) 56
urochordata - immunology (55) 55
cell line, tumor (53) 53
cells (53) 53
genome (53) 53
microbiology (53) 53
physiological aspects (53) 53
chemistry (52) 52
gene expression regulation, developmental (51) 51
alkaloids - isolation & purification (50) 50
genes (50) 50
molecular weight (50) 50
natural products (50) 50
molecular conformation (48) 48
mass spectrometry (47) 47
identification (46) 46
natural-products (46) 46
biological products - chemistry (45) 45
alkaloids - chemical synthesis (44) 44
metabolites (44) 44
urochordata - analysis (44) 44
chemistry, multidisciplinary (43) 43
porifera - chemistry (43) 43
vertebrates (43) 43
biotechnology & applied microbiology (42) 42
biological evolution (41) 41
dna (41) 41
multidisciplinary sciences (41) 41
sequence (41) 41
molecular biology (40) 40
cytotoxicity (39) 39
genomics (39) 39
immunology (39) 39
rats (39) 39
research article (39) 39
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