1. Inhibition of Herpes simplex virus infection by pine cone antitumour substances;Fukuchi;Anticancer Res.,1989
2. Induction of antimicrobial activity by antitumour substances from pine cone extract of Pinus parviflora Sieb. et Zucc;Harada;Anticancer Res.,1988
3. Stimulation of mouse peritoneal macrophages by lignin related substances;Kikuchi;Anticancer Res.,1991
4. Mitogenic activity of pine cone extracts against cultured splenocytes from normal and tumour-bearing animals;Kurakata;Anticancer Res.,1989
5. Mitogenic activity of natural and synthetic lignins against cultured splenocytes;Kurakata;In Vivo,1990