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The chicken embryo is a unique model that overcomes many limitations to studying the biology of cancer in vivo. The chorioallantoic membrane (CAM), a well-vascularized extra-embryonic tissue located underneath the eggshell, has a successful history as a biological platform for the molecular analysis of cancer including viral oncogenesis, [8] carcinogenesis, [9] tumor xenografting, [1] [10] [11 ...
Radiative equilibrium, the state where the energy radiated is balanced by the energy absorbed; Secular equilibrium, a state of radioactive elements in which the production rate of a daughter nucleus is balanced by its own decay rate; Thermodynamic equilibrium, the state of a thermodynamic system in which there are no net flows of matter or energy
The balance of nature, also known as ecological balance, is a theory that proposes that ecological systems are usually in a stable equilibrium or homeostasis, which is to say that a small change (the size of a particular population, for example) will be corrected by some negative feedback that will bring the parameter back to its original "point of balance" with the rest of the system.
SF Gilbert, JM Opitz, and RA Raff. 1996. "Resynthesizing Evolutionary and Developmental Biology". Developmental Biology. 173:357-372; G von Dassow and E Munro. "Modularity in Animal Development and Evolution: Elements of a Conceptual Framework for EvoDevo". J. Exp. Zool. 285:307-325. MI Arnone and EH Davidson. 1997.
In biology, homeostasis (British also homoeostasis; / h ɒ m i oʊ ˈ s t eɪ s ɪ s,-m i ə-/) is the state of steady internal physical and chemical conditions maintained by living systems. [1] This is the condition of optimal functioning for the organism and includes many variables, such as body temperature and fluid balance , being kept ...
In biochemistry, steady state refers to the maintenance of constant internal concentrations of molecules and ions in the cells and organs of living systems. [1] Living organisms remain at a dynamic steady state where their internal composition at both cellular and gross levels are relatively constant, but different from equilibrium concentrations. [1]
The House voted on Tuesday to pass a GOP-led bill that would ban transgender athletes from women’s and girls’ sports at federally funded schools and educational institutions.
Structure and location of gap junctions on cellular membranes. Gap junction modulation describes the functional manipulation of gap junctions, specialized channels that allow direct electrical and chemical communication between cells without exporting material from the cytoplasm. [1]