The Lymphoid Cell Line B and T Cells2

The lymphoid cell line differentiates into two types of lymphocytes, the B lymphocytes and the T lymphocytes. These cells constitute only about 20% to 45% of blood leukocytes. They are small cells, only slightly larger than an erythrocyte, but B and T cells can be identified microscopically by large nuclei that occupy most of the cytoplasmic volume. The nuclei are large to contain enough DNA to enable the T and B cells to biosynthesize massive amounts of protein needed to carry out their immune functions. T lymphocytes are involved in cell-mediated immunity (CMI); B lymphocytes differentiate into Ab-producing plasma cells. B lymphocytes express antibodies on their surfaces that bind antigens. T lymphocytes express specialized T-cell receptors on their surfaces that bind major histocompatibility complex 1 (MHC-I) and 2 (MHC-II) complexed with anti-genic peptide fragments.

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Conquering Fear In The 21th Century

Conquering Fear In The 21th Century

The Ultimate Guide To Overcoming Fear And Getting Breakthroughs. Fear is without doubt among the strongest and most influential emotional responses we have, and it may act as both a protective and destructive force depending upon the situation.

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