Ⅰ. INTRODUCTION Since Rygaard and Povlsen first successfully transplanted human tumors into nude mice, many attempts have been made to the xenograft of various kinds of human tumors into this immunologically defectiv...Ⅰ. INTRODUCTION Since Rygaard and Povlsen first successfully transplanted human tumors into nude mice, many attempts have been made to the xenograft of various kinds of human tumors into this immunologically defective animal. The human tumor/nude mouse system is thought to have provided a unique opportunity for the study of the biology of human tumors and the test of potential antineoplastic agents. However, the medical literature contains few reports of serial transplantation of human osteosarcoma in nude mice.展开更多
The high resolution electron microscopy study of fibrous amphibole (tremolite, amosite,crocidolite and anthophillite) has first been made by J. H. Hutchison et al. They observed the Wadsley defects with triple chains ...The high resolution electron microscopy study of fibrous amphibole (tremolite, amosite,crocidolite and anthophillite) has first been made by J. H. Hutchison et al. They observed the Wadsley defects with triple chains and chains of other forms. M.A. Franco et al. obtained the high resolution electron展开更多
文摘Ⅰ. INTRODUCTION Since Rygaard and Povlsen first successfully transplanted human tumors into nude mice, many attempts have been made to the xenograft of various kinds of human tumors into this immunologically defective animal. The human tumor/nude mouse system is thought to have provided a unique opportunity for the study of the biology of human tumors and the test of potential antineoplastic agents. However, the medical literature contains few reports of serial transplantation of human osteosarcoma in nude mice.
文摘The high resolution electron microscopy study of fibrous amphibole (tremolite, amosite,crocidolite and anthophillite) has first been made by J. H. Hutchison et al. They observed the Wadsley defects with triple chains and chains of other forms. M.A. Franco et al. obtained the high resolution electron
