Results 221 to 230 of about 69,559 (246)

Evolution of the complement system

Current Opinion in Immunology, 2001
The mammalian complement system constitutes a highly sophisticated body defense machinery comprising more than 30 components. Research into the evolutionary origin of the complement system has identified a primitive version composed of the central component C3 and two activation proteases Bf and MASP in cnidaria.
Masaru Nonaka, Fumiko Yoshizaki
openaire   +6 more sources

Evolution of sensory systems

Current Opinion in Neurobiology, 2021
Sensory systems evolve and enable organisms to perceive their sensory Umwelt, the unique set of cues relevant for their survival. The multiple components that comprise sensory systems - the receptors, cells, organs, and dedicated high-order circuits - can vary greatly across species.
Pablo Oteiza, Maude W. Baldwin
openaire   +3 more sources

Evolution in Nervous Systems

Annual Review of Neuroscience, 1991
Evolution is the unifying theme of biological thought. It is therefore surprising that until recently it has little shaped the ideas of those who have sought principles among the cells and circuits of nervous systems. After relegation to an historic approach for many decades, an evolutionary perspective in neuroscience has revived, armed now with ...
E A Arbas   +2 more
openaire   +2 more sources

The evolution of interorganizational systems

Journal of Information Technology, 1991
In the literature on interorganizational systems (IOS) one encounters mainly examples of information systems that support highly structured transactions between organizations. However, the range of interorganizational activities also includes less structured interactions, such as negotiations and joint problem solving.
Johannes Meier, Ralph H. Sprague
openaire   +2 more sources

The Evolution of the PAPRICA System

Integrated Computer-Aided Engineering, 1997
JOURNAL OF INTEGRATED COMPUTER-AIDED ...
A. BROGGI   +4 more
openaire   +3 more sources

Evolution of the complement system

Immunology Today, 1991
The ancestral form of the alternative pathway of complement activation probably originated as a primitive independent immune system. Subsequent evolution of an adaptive immune response drove the specialization of the classical pathway to connect antibody-mediated nonself recognition to the complement-dependent effector mechanisms.
John P. Atkinson, Timothy C. Farries
openaire   +3 more sources

Evolution of cellular systems

2017
This chapter covers the brief and comprehensive analysis of evolution of cellular systems from 1st generation to 4th generation mobile cellular systems. It also covers the basic introduction of the architecture and security protocols that are used in each generation of mobile cellular systems, along with the brief history of wireless communications.
Ahmed Bux Abro   +4 more
openaire   +3 more sources

The Evolution of Systems

2016
Any experimental observation or any practical use of quantum phenomena relies on processes where a system evolves from a know initial state, and one performs measurements on it at some later time.
openaire   +2 more sources

Evolution of transport systems

Journal of Theoretical Biology, 1968
Abstract It is proposed that the evolution of transport catalysts for required nutrients may have preceded the evolution of biosynthetic pathways for these substances, or occurred at the same time as an alternative solution to the stress of nutrient depletion.
openaire   +3 more sources

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