Host defense mechanisms against tumors as the principal targets of tumor promoters R. Keller Guest Editorial Pages: 203 - 211
Influence of vasoactive drugs on the intratumor distribution of blood flow and vascular volume in a transplantable rat fibrosarcoma L. KarlssonA. AlpstenH.-I. Peterson Original Papers Pages: 212 - 220
Gut endocrine cells in rat intestinal-tract carcinoma induced by 1,2-dimethylhdrazine F. ShimamotoE. TaharaN. Yanaihara Original Papers Pages: 221 - 230
Simultaneous occurrence of receptors for estradiol, progesterone, and dihydrotestosterone in canine mammary tumors H. EllingF. R. Ungemach Original Papers Pages: 231 - 237
Carcinoembryonic antigen (CEA) in human colorectal cancers growing subcutaneously in nude mice H. H. FiebigS. von Kleist Original Papers Pages: 238 - 242
Effects of radiation on murine T-cell leukemogenesis induced by butylnitrosourea H. J. SeidelS. Bischof Original Papers Pages: 243 - 249
Chemotherapeutic study on Yoshida sarcoma ascites cells implanted into the glandular stomach of rats G. EichlerM. HabsD. Schmähl Original Papers Pages: 250 - 257
Perinatal carcinogenicity of isoniazid (INH) in swiss mice Malini M. MenonS. V. Bhide Original Papers Pages: 258 - 261
Studies on the tumor-inhibiting efficacy of Iscador in experimental animal tumors M. BergerD. Schmähl Original Papers Pages: 262 - 265
Studies on the so-called “synchronization therapy” of tumors with vincristine B. SchultzeW. JellinghausW. Maurer Original Papers Pages: 266 - 274
Identification of three indolic compounds in a pigmented-melanoma cell-culture supernatant by gas chromatography-mass spectrometry S. PavelF. A. J. MuskietW. van der Slik Original Papers Pages: 275 - 279
Microfluorimetric and X-ray microanalytic studies on the DNA content and Na+:K+ ratios of the cell nucleic in various types of thyroid tumors G. L. LukácsI. Zs.-NagyGy. Balázs Original Papers Pages: 280 - 284
On the ultrastructure of the gastric “borderline lesion” J. F. RiemannH. SchmidtP. Hermanek Original Papers Pages: 285 - 291
Population based pathology statistics of oesophageal carcinoma K. KayserH.-U. Burkhardt Original Papers Pages: 292 - 298
Preputial tumors induced by intragastric intubations of 7,12-dimethylbenz(a)anthracene in gonadectomized female and male rats Hiroki Yoshida Short Communication Pages: 299 - 302
Experimental evidence for a hyperthermia-induced breakdown of tumor blood flow during normoglycemia P. VaupelW. Müller-KlieserH. Gabbert Letter to the Editor Pages: 303 - 304