Hirabayashi K, Iwata S, Ito M, Shigeta S, Narui T, Mori T, et al. Inhibitory effect of a lichen polysaccharide sulfate, GE-3-S, on the replication of human immunodeficiency virus (HIV) in vitro.. Chem Pharm Bull. 1989, 37 (9): 2410–2. PMID 2575016. doi:10.1248/cpb.37.2410.
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Hirabayashi K, Iwata S, Ito M, Shigeta S, Narui T, Mori T, et al. Inhibitory effect of a lichen polysaccharide sulfate, GE-3-S, on the replication of human immunodeficiency virus (HIV) in vitro.. Chem Pharm Bull. 1989, 37 (9): 2410–2. PMID 2575016. doi:10.1248/cpb.37.2410.