Cell Communication in Tissue P Systems and Cell Division in Population P Systems

INFLUENCE OF NERVE TISSUE-DERIVED NEUROTRANSMITTERS ON MAST CELL MIGRATION

In vitro culture systems using bone marrow cells from BALB/C mice were set up in medium supplemented with spleen-derived medium. Bone marrow cells grown in spleen-derived medium gave rise to cultures containing >97% mast cells. The cells were used in polarisation chemotaxis assays with the intention of determining the effect of nerve tissue-derived neurotransmitters on mast cell migration. ...

Induction of symmetrical nucleus division and multi-nuclear structures in isolated microspores of sugarcane (Saccharum officinarum L.)

In this study, the effects of floret sterilization with sodium hypochlorite, cold stress, heat shock, 2,4-dichlorophenoxyacetic acid and colchicine treatment on microspore viability and induction of symmetrical nuclei divisions were assessed in six genotypes of sugarcane. The highest microspore viability was observed when florets were sterilized with 3.0% and 3.5% sodium hypochlorite in all gen...

Comparative Adaptation of some pox viruses in two cell systems

A Tissue P Systems Based Uniform Solution to Tripartite Matching Problem

A tissue P system with cell division is a computing model which has two basic features: intercellular communication and the ability of cell division. The ability of cell division allows us to obtain an exponential amount of cells in linear time and to design cellular solutions to computationally hard problems in polynomial time. In this work we present an efficient solution to the tripartite ma...

Limits of the Power of Tissue P Systems with Cell Division

Tissue P systems generalize the membrane structure tree usual in original models of P systems to an arbitrary graph. Basic operations in these systems are communication rules, enriched in some variants with cell division or cell separation. Several variants of tissue P systems were recently studied, together with the concept of uniform families of these systems. Their computational power was sh...