title: Tumor grading by implantation in embryos. II. Grading of some human astrocytomas.
mesh_terms: D000328:Adult; D000367:Age Factors; D000368:Aged; D001254:Astrocytoma / Q000401:mortality / Q000473:pathology*; D005855:Germ Layers; D006801:Humans; D008875:Middle Aged; D009368:Neoplasm Transplantation; D011379:Prognosis; D014183:Transplantation, Heterologous