It now appears phenomenologically that the third family may be essentially diierent from the rst two. Particularly the high value of the top quark mass suggests a special role. In the standard model all three families are treated similarly becoming exactly the same at asymptotically high energies] so I need to extend the model to accommodate the goal of a really diierent third family. In this a...

RAMOS DIEZ-ASTRAIN, Xavier María, A través del Telón de Acero. Historia las relaciones políticas entre España y la RDA (1973-1990). Madrid, CEPC, 2021, 331 pp.

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Biological and epidemiological data suggest that progesterone has an important role in mammary tumorigenesis. Because the effects of progesterone require the progesterone receptor (PGR), which exists in two isoforms, PR-A and PR-B, we sought to determine whether the functional polymorphism, +331 G/A, which causes an increase in the expression of the hPR-B isoform, is related to breast cancer ri...

INTRoDucTioN................................................................ 320 EXPERIMENTAL APPROACH...................................................... 321 MATERIALS AND METHODS..................................................... 321 Media................................................................... 321 Bacterial Strains............................................................ 32...