galactan article 58 Galactans 50 Seaweed 40 nonhuman 40 seaweed 38 priority journal 36 Polysaccharides 26 algae 26 antiviral activity 26 unclassified drug 26 carrageenan 24 polysaccharide 22 Antiviral Agents 20 Sulfated galactans 20 controlled study 20 Algae, Red 18 antivirus agent 18 chemistry 18 galactose 18 sulfate 18 Cercopithecus aethiops 16 Rhodophyta 16 Vero Cells 16 carbohydrate analysis 16 methylation 16 Animals 14 Antiviral activity 14 Dengue virus 14 Nuclear Magnetic Resonance, Biomolecular 14