the susceptibility of various strains of mice to infection by leishmania tropica (major) was recently studied in this laboratory. the infection in a/j, c3h, cba, akr/j, akr/cu, and c57b1 mice (the semi resistant strains) remained cutaneous and the animals recovered within 4-6 months. however balb/c mice developed generalized infection after two months of exposure resulting in death 3-4 months l...

The purpose of this study was to evaluate the possibility that hormones and mouse mammary tumor virus (MuMTV) are cocarcinogenic for mammary epithelium. Results of our investigations in vivo and in vitro suggest: (a) Hormones promote mammary carcinogenesis in BALB/c females whether MuMTV is germinally (BALB/c) or horizontally (BALB/cfC3H) transmitted; the rate of carcinogenesis in BALB/cfC3H fe...

This study explores the genetic and immunologic factors involved in the differences in duration of transgene expression following in vivo transduction with recombinant adenoviruses. Different strains of mice (C3H/HeJ [C3H], C57BL/6J [B6], BALB/cJ [Balb/c], C. B10-H2(b)/LiMcdJ [Balb.B], CB6F1/J [(Balb/c x B6)F1], B6C3F1/J [(B6 x C3H)F1], and BALB/cj SCID) received 5 x 10(9) PFU of the first-gene...

Introduction: The MHC (H-2d) and non-MHC genetic background make the BALB/c strain highly susceptible to inflammatory arthritis and spondylitis. Although different BALB/c colonies develop proteoglycan (PG)-induced arthritis (PGIA) and spondylitis (PGIS) in response to immunization with human cartilage PG, they show significant differences in disease penetrance, despite being maintained by the s...

The data and results in this series ofpapers on chemical transformation of BALB/c-3T3 cells detail a substantial effort to understand the uses and limitations of this methodology in identifying chemicals with carcinogenic potential. This project is an important portion of an effort supported by the National Toxicology Program (NTP) to develop, evaluate, and validate various in vitro and in vivo...

In another report on the pathologic aspects of Friend virus leukemia (@) we have confirmed and extended our earlier observation (3) that this virus infection in BALB/c mice is identical to that de scribed in other susceptible strains of mice (4, 6). The development of a transplantable tumor van ant with the description of its biological and his tological characteristics in BALB/c and related hy...

A graft-versus-host reaction was induced in (BALB/c x C5 7BL/6)F(1) mice by intravenous injection of BALB/c spleen cells. Six days later, the mice received subcutaneous grafts of a chemically induced BALB/c sarcoma. The growth of the tumor grafts was accelerated.

Regression of autochthonous (primary) murine sarcoma virus (Moloney) (MSV)-induced tumors was first detectable in 13% of BALB/c mice inoculated with MSV at 3 weeks of age and increased in incidence thereafter. This correlated with the ability to resist transplanted BALB/c Moloney sarcoma (MS) cells. Treatment of young BALB/c mice bearing palpable primary tumors with spleen cells or with serum f...

Genetic background influences the outcome of Leishmania major infection. C57BL/6 mice mount a Th1 response and resolve infection. In contrast, BALB/c mice mount a Th2 response and develop chronic lesions. This susceptible phenotype is seen even though BALB/c mice generate IFN-gamma-producing T cells at proportions similar to C57BL/6 mice in their lymph nodes (LN) early after infection. We had p...

In a transgenic mice (BALB-neuT) over-expressing ErbB2 receptor, we investigated the adult mouse median nerve in physiological and pathological conditions. Results showed that, in physiological conditions, the grip function controlled by the median nerve in BALB-neuT mice was similar to wild-type (BALB/c). Stereological assessment of ErbB2-overexpressing intact nerves revealed no difference in ...