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In the present paper, we propose P systems that work in a constant number of steps. We first propose two P systems for computing multiple input logic functions. An input of the logic functions is a set of n binary numbers of m bits, and an output is a binary number defined by the logic functions. The first and second P systems compute AND and EX-OR functions for the input, and both of the P systems work in a constant number of steps by using O(mn) types of objects, a constant number of membranes, and evolution rules of size O(mn). Next, we propose a P system for the addition of two binary numbers of m bits. The P system works in a constant number of steps by using O(m) types of objects, a constant number of membranes and evolution rules of size O(m2). We also introduce a P system that computes the addition of two vectors of n binary numbers of m bits by using the above P system as a sub-system. The P system for vector addition works in a constant number of steps by using O(mn) types of objects, a constant number of membranes, and evolution rules of size O(m2n). [ABSTRACT FROM AUTHOR]

Deals with needle prick-induced sporotrichosis. Placement of a peripheral venous catheter; Improvement of skin lesions.

Reports on the ability of the antibody C-20, which was derived from the breast cancer gene designated as BRCA1, to recognize smooth muscle cells. Results of immunohistochemical staining of C-20; Cross-reaction of C-20 with some tyrosine kinase receptors; Antibodies that can be used as differentiation markers of smooth muscle cells.