789 resultados para BOXES


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Las casitas de Campo Baeza y la cajita del Principito

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beta 2-Microglobulin is an essential subunit of major histocompatibility complex (Mhc) class I molecules, which present antigenic peptides to T lymphocytes. We sequenced a number of cDNAs and two genomic clones corresponding to chicken beta 2-microglobulin. The chicken beta 2-microglobulin gene has a similar genomic organization but smaller introns and higher G+C content than mammalian beta 2-microglobulin genes. The promoter region is particularly G+C-rich and contains, in addition to interferon regulatory elements, potential S/W, X, and Y boxes that were originally described for mammalian class II but not class I alpha or beta 2-microglobulin genes. There is a single chicken beta 2-microglobulin gene that has little polymorphism in the coding region. Restriction fragment length polymorphisms from Mhc homozygous lines, Mhc congenic lines, and backcross families, as well as in situ hybridization, show that the beta 2-microglobulin gene is located on a microchromosome different from the one that contains the chicken Mhc. We propose that the structural similarities between the beta 2-microglobulin and Mhc genes in the chicken are due to their presence on microchromosomes and suggest that these features and the microchromosomes appeared by deletion of DNA in the lineage leading to the birds.

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This bill of lading is from Jasper Mauduit's shipment of books (his own gift and those bequeathed by Dr. Avery) to Andrew Oliver. The books were shipped from London to Boston via a ship called Hale Galley, under the direction of Captain Harris Hatch.

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Shibata Zeshin; 1 ft. 4 1/2 in.x 9 1/64 in.x 9 39/64 in.; gold and silver hiramaki-e, takamaki-e, and colored togidashimaki-e on lacquered wood

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At head of title: U.S. Department of Commerce. Daniel C. Roper, secretary. Bureau of Foreign and Domestic Commerce. Alexander V. Dye, director ...

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Includes index.

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At head of title: 1921- : Department of Commerce ... Bureau of the Census ...