Abstract: A method for increasing the number of CD4+ T-lymphocytes in the serum of a subject in need of such treatment comprising administering to the subject a pharmaceutical composition comprising an amount of an L-isomer of ?-lactam effective to increase the number of CD4+ T-lymphocytes in said patient's serum.

Abstract: A method for increasing the number of CD4+ T-lymphocytes in the serum of a subject in need of such treatment comprising administering to the subject a pharmaceutical composition comprising an amount of an L-isomer of ?-lactam effective to increase the number of CD4+ T-lymphocytes in said patient's serum.

Abstract: A jewelry article optionally with one or more gemstones, includes one or more hollow core segments with at least one bore in a side wall, and optionally an element interconnected with the one or more of the segments formed by a flexible linkage. A segment may include a setting with rods to receive a gemstone. The segment(s), and optionally the element, are preferably in an annular array to form a ring, necklace and the like and may be of the same or different configurations. The segments also may have different arcuate circumferential lengths and cross sectional shapes preferably frusto-conical and may comprise only a portion of an article such as a finger ring or necklace and the like periphery. The linkage is formed by a pin secured to one segment or element and which pin passes through the bore into the hollow core of the adjacent abutting segment. A coil compression spring is captured to the pin in the hollow core of a segment and urges the adjacent components together.

Abstract: A jewelry article optionally with one or more gemstones, includes one or more hollow core segments with at least one bore in a side wall, and optionally an element interconnected with the one or more of the segments formed by a flexible linkage. A segment may include a setting with rods to receive a gemstone. The segment(s), and optionally the element, are preferably in an annular array to form a ring, necklace and the like and may be of the same or different configurations. The segments also may have different arcuate circumferential lengths and cross sectional shapes preferably frusto-conical and may comprise only a portion of an article such as a finger ring or necklace and the like periphery. The linkage is formed by a pin secured to one segment or element and which pin passes through the bore into the hollow core of the adjacent abutting segment. A coil compression spring is captured to the pin in the hollow core of a segment and urges the adjacent components together.

Abstract: A platinum alloy has a white finish and comprises platinum, rhodium and ruthenium, with the platinum being present at a concentration of about 95% by weight, the rhodium being present at a concentration from about 2.5% to about 3.5% by weight, with increasing whiteness and workability at 3.5% Rh, and the ruthenium being present at a concentration correspondingly from about 1.5% to about 2.5% by weight, with the preferred composition being at about 1.5% by weight. In addition, methods of preparing the alloy and aesthetic items made with the alloy are included.