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  • Y Shinkai, G Rathbun, K P Lam, E M Oltz, V Stewart, M Mendelsohn +4 others
  • 1992
We have generated mice that carry a germline mutation in which a large portion of the RAG-2 coding region is deleted. Homozygous mutants are viable but fail to produce mature B or T lymphocytes. Very immature lymphoid cells were present in primary lymphoid organs of mutant animals as defined by surface marker analyses and Abelson murine leukemia virus(More)
Within the CNS and under normal conditions, nitric oxide (.NO) appears to be an important physiological signalling molecule. Its ability to increase cyclic GMP concentration suggests that .NO is implicated in the regulation of important metabolic pathways in the brain. Under certain circumstances .NO synthesis may be excessive and .NO may become neurotoxic.(More)
During the assembly of immunoglobulin and T cell receptor variable region genes from variable (V), diversity (D), and joining (J) segments, the germline-encoded repertoire is further diversified by processes that include the template-independent addition of nucleotides (N regions) at gene segment junctions. Terminal deoxynucleotidyl transferase(More)
  • K Nakayama, K Nakayama, I Negishi, K Kuida, Y Shinkai, M C Louie +4 others
  • 1993
The bcl-2 proto-oncogene can prevent the death of many cell types. Mice were generated that were chimeric for the homozygous inactivation of bcl-2. Lymphocytes without Bcl-2 differentiated into phenotypically mature cells. However, in vitro, the mature T cells that lacked Bcl-2 had shorter life-spans and increased sensitivity to glucocorticoids and(More)
BACKGROUND Mice homozygous for a loss-of-function mutation of the recombination-activating gene-2 (RAG 2), which is required for the rearrangement of antigen receptor genes, do not produce mature B and T lymphocytes. But chimeric mice that result from injection of normal embryonic stem (ES) cells into blastocysts from RAG2-deficient mice develop normal(More)
1. To understand the role of FDG PET/CT imaging in the multimodality investigation of gynecological and genitourinary cancers. 2. To describe the mechanism of action and technical pitfalls of FDG-PET/CT. 3. To highlight key imaging features of physiological and non-physiological FDG uptake and show how this is essential for interpretation of gynecological(More)
Introduction: Previous research in this centre enabled the introduction of a local protocol of nonbiopsy and discharge of women <30 years old with presumed fibroadenomas (FAs). Four years on, we have audited protocol accuracy, effect on biopsy workload, safety and its potential for influencing UK and European practice. Methods: Women aged <30 attending the(More)
Introduction The automated breast volume scanner (ABVS) is the fi rst of its kind and utilises a large, 17 cm × 15 cm high-frequency ultrasound probe which sweeps across the whole breast generating images that can be reformatted into multiple planes and a 3D volume. ABVS will change breast ultrasound practice by: introducing operator standardisation,(More)