Photochemistry of some extended .pi.-systems: type A and aryl rearrangements of systems with extended conjugation related to cyclohexadienones and cyclohexenones. Mechanistic and exploratory organic photochemistry

1989 ◽  
Vol 54 (24) ◽  
pp. 5788-5804 ◽  
Author(s):  
Howard E. Zimmerman ◽  
Paul H. Lamers
Keyword(s):  
Type A ◽  
Organic Photochemistry ◽  
Pi Systems

Organic photochemistry. XXXVIII. Photochemistry without light and the stereochemistry of the type A dienone rearrangement

1969 ◽  
Vol 91 (2) ◽  
pp. 434-445 ◽  
Author(s):  
Howard E. Zimmerman ◽  
David S. Crumrine ◽  
Dietrich Doepp ◽  
Paul S. Huyffer
Keyword(s):  
Type A ◽  
Organic Photochemistry

Biological and Morphological Studies on Low-Leukemia-Strain Mice with Hodgkin's-Like Neoplasia Induced by Serial Cell-Free Transmission of Leukemic Organs of SJL/J Strain Mice

1968 ◽  
Vol 26 ◽  
pp. 210-211
Author(s):  
S. Fujinaga ◽  
K. Maruyama ◽  
C.W. Williams ◽  
K. Sekhri ◽  
L. Dmochowski
Keyword(s):  
Tissue Culture ◽  
Type A ◽  
Reticulum Cell ◽  
Type B ◽  
Viral Origin ◽  
Serial Transfer ◽  
Strain Mouse ◽  
Morphological Studies ◽  
Cell Neoplasm ◽  
Free Material

Yumoto and Dmochowski (Cancer Res.27, 2098 (1967)) reported the presence of mature and immature type C leukemia virus particles in leukemic organs and tissues such as lymph nodes, spleen, thymus, liver, and kidneys of SJL/J strain mice with Hodgki's-like disease or reticulum cell neoplasm (type B). In an attempt to ascertain the possibility that this neoplasia may be of viral origin, experiments with induction and transmission of this neoplasm were carried out using cell-free extracts of leukemic organs from an SJL/J strain mouse with spontaneous disease.It has been possible to induce the disease in low-leukemia BALB/c and C3HZB strain mice and serially transfer the neoplasia by cell-free extracts of leukemic organs of these mice. Histological examination revealed the neoplasia to be of either reticulum cell-type A or type B. Serial transfer is now in its fifth passage. In addition leukemic spleen from another SJL/J strain mouse with spontaneous reticulum cell neoplasm (type A) was set up in tissue culture and is now in its 141st serial passage in vitro. Preliminary results indicate that cell-free material of 39th tissue culture passage can reproduce neoplasia in BALB/c mice.

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