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Male
Support, Non-U.S. Gov't
controlled study
male
66
Animal
64
article
63
nonhuman
58
priority journal
54
animal experiment
47
Rats
40
rat
40
animal tissue
30
Female
27
female
23
Rats, Inbred Strains
21
animal cell
19
intraperitoneal drug administration
19
human
18
Human
16
Animalia
12
unclassified drug
12
Comparative Study
10
Mice
10
Time Factors
10
porphyrin
10
Adolescent
8
Aminolevulinic Acid
8
Bufo arenarum
8
Dose-Response Relationship, Drug
8
Liver
8
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