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Loligo pealei, a squid is the subject of studies of nerve function because of its giant axon (nearly 1 mm diameter, roughly a thousand times larger than typical mammalian axons) Lymnaea stagnalis (great pond snail), a widely used model mollusc, for the study of biomineralization, neurobiology, eco-toxicology, sexual selection and body asymmetry ...
He used the spectroscope to study pigments in microorganisms and muscular tissue. He was the first to describe cytochromes , which he termed myohaematins (respiratory pigments of muscle). [ 5 ] Serious criticism of his work, led by German scientist Felix Hoppe-Seyler , led to it being discredited at the time. [ 3 ]
An animal model (short for animal disease model) is a living, non-human, often genetic-engineered animal used during the research and investigation of human disease, for the purpose of better understanding the disease process without the risk of harming a human. Although biological activity in an animal model does not ensure an effect in humans ...
study was conducted to determine if high fructose corn syrup contains mercury, a toxic metal historically used as an anti-microbial. High fructose corn syrup samples were collected from three different manufacturers and analyzed for total mercury. The samples were found to contain levels of mercury ranging from below a detection limit of 0.005 to
Seminal papers in the field include Sheldon & Verhulst's [3] which proposed concepts from Life history theory, trade-offs and allocation of resources between competing costly physiological functions, are a cause of variation in immunity [5] One of the field's seminal papers, by Folstad and Karter, [7] was a response to Hamilton and Zuk's famous paper on the handicap hypothesis for sexually ...
In any case, users of a model need to understand the assumptions made that are pertinent to its validity for a given use. Building a model requires abstraction. Assumptions are used in modelling in order to specify the domain of application of the model. For example, the special theory of relativity assumes an inertial frame of reference.
One example of manipulating candidate genes can be seen in a study completed by Martin E. Feder on heat-shock proteins and their function in Drosophila melanogaster. [28] Feder designed a holistic approach to study Hsp70 , a candidate gene that was hypothesized to play a role in how an organism adapted to stress.
A classic example of this is the study of gravitation. Newton formed a law for gravitation stating that the force of gravitation is directly proportional to the product of the two masses and inversely proportional to the square of the distance between them. For over 170 years, all observations seemed to validate his equation.