ABSTRACT
Irradiation by gamma rays of B-DNA (in copper-containing solution) converts B-DNA to Z-DNA.
See also DEOXYRIBONUCLEIC ACID (DNA), A-DNA, ION, CELL, Z-DNA
B Cells B lymphocytes. See LYMPHOCYTE, B LYMPHOCYTES,
BLAST CELL B Lymphocytes A class of white blood cells
originating in the bone marrow and found in blood, spleen, and lymph nodes. They are the precursors of (blood) plasma cells (B cells) that secrete antibodies (IgG) directed against invading antigens (e.g., of pathogenic bacteria). By a complex “gene splicing” process, the B cells of the human body are able to produce more than one billion different IgG antibodies (i.e., able to bind onto and neutralize a billion different antigens). By a natural process known as affinity maturation, the immune system selects those B cells producing antibodies with greater affinity for the antigen of the invading pathogen to combat the invader.
