Fig. 4.

(A) General schematic representation of virus attachment and entry into the host cell- (i) Initial attachment of virus to cell surface receptors takes place through binding process [223,224]. (B) Mode of antiviral action of sulfated polysaccharides (Lambda-carrageenan, Fucoidan, Ulvanobiuronicacid A3s) (ii) The polysaccharide involving in the prevention of virus attachment to host cells by providing (iii) shielding effect that fails the (iv) virus receptor binding activity (Table 1). (Section5.1).