scholarly journals Weil-Felix reaction in typhus

2021 ◽  
Vol 17 (1) ◽  
pp. 32-36
Author(s):  
V. M. Aristovsky
Keyword(s):  
Causative Agent ◽  
Theoretical Interest

Despite the fact that until now we do not know the true causative agent of typhus infection, in the literature there are a number of observations concerning immunity reactions in the serum of typhus patients, observations that, bringing us closer to solving the question of the causative agent of typhus, do not are only of theoretical interest, but even now they can be practically used at the patient's bedside.

Scanning electron microscopy of erythrophagocytosis by Entamoeba histolytica trophozoites

1992 ◽  
Vol 50 (1) ◽  
pp. 880-881
Author(s):  
Victor Tsutsumi ◽  
Adolfo Martinez-Palomo ◽  
Kyuichi Tanikawa
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Red Blood Cells ◽  
Entamoeba Histolytica ◽  
Causative Agent ◽  
Blood Cells ◽  
Protozoan Parasite ◽  
Complex Phenomenon ◽  
Great Capacity ◽  
Scanning Electron

The protozoan parasite Entamoeba histolytica is the causative agent of amebiasis in man. The trophozoite or motile form is a highly dynamic and pleomorphic cell with a great capacity to destroy tissues. Moreover, the parasite has the singular ability to phagocytize a variety of different live or death cells. Phagocytosis of red blood cells by E. histolytica trophozoites is a complex phenomenon related with amebic pathogenicity and nutrition.

Divine Machines

2011 ◽  
Author(s):  
Justin E. H. Smith
Keyword(s):  
Seventeenth Century ◽  
Early Modern ◽  
Scientific Inquiry ◽  
Life Sciences ◽  
Theoretical Interest ◽  
Living World ◽  
Mechanical Philosophy ◽  
Organic Life ◽  
The World ◽  
Generation Theory

Though it did not yet exist as a discrete field of scientific inquiry, biology was at the heart of many of the most important debates in seventeenth-century philosophy. Nowhere is this more apparent than in the work of G. W. Leibniz. This book offers the first in-depth examination of Leibniz's deep and complex engagement with the empirical life sciences of his day, in areas as diverse as medicine, physiology, taxonomy, generation theory, and paleontology. The book shows how these wide-ranging pursuits were not only central to Leibniz's philosophical interests, but often provided the insights that led to some of his best-known philosophical doctrines. Presenting the clearest picture yet of the scope of Leibniz's theoretical interest in the life sciences, the book takes seriously the philosopher's own repeated claims that the world must be understood in fundamentally biological terms. Here it reveals a thinker who was immersed in the sciences of life, and looked to the living world for answers to vexing metaphysical problems. The book casts Leibniz's philosophy in an entirely new light, demonstrating how it radically departed from the prevailing models of mechanical philosophy and had an enduring influence on the history and development of the life sciences. Along the way, the book provides a fascinating glimpse into early modern debates about the nature and origins of organic life, and into how philosophers such as Leibniz engaged with the scientific dilemmas of their era.

Клубневая нематода картофеля: биология и контроль

2018 ◽  
Author(s):  
A.A. Shesteperov ◽  
K.A. Perevertin ◽  
R.A. Bagrov ◽  
K.O. Butenko
Keyword(s):  
Environmental Factors ◽  
Causative Agent ◽  
Protective Measures ◽  
Ditylenchus Destructor

Представлена информация об ущербе картофелеводству от дитиленхоза в последние годы. Описаны симптомы поражения картофеля клубневой картофельной нематодой, биология возбудителя, его устойчивость к факторам внешней среды. Детально представлены эпифитотиология дитиленхоза картофеля (вертикальный, хронологический, горизонтальный механизмы передачи и сохранения возбудителя), способы его диагностики, меры защиты в фермерских, крестьянских и личных хозяйствах.Information on the damage to potatoes from Ditylenchus destructor in recent years is presented. The symptoms of the potato lesion by Ditylenchus destructor, the biology of the pathogen, its resistance to environmental factors are described. Epiphytotiology (vertical, chronological, horizontal mechanisms for the transfer and preservation of the causative agent), methods of its diagnosis, protective measures at peasant and private farms are given in details.

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