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The brain has a protective barrier that should protect us against microplastics Unlike the kidney, liver, and other organs, the human brain has a protective filter called the blood-brain barrier ...
Human brains today contain 50% more plastic than in 2016, a new study found. ... but remember that dementia is a disease where the blood brain barrier and clearance mechanisms are impaired ...
The BBB is distinct from the quite similar blood-cerebrospinal fluid barrier, which is a function of the choroidal cells of the choroid plexus, and from the blood-retinal barrier, which can be considered a part of the whole realm of such barriers. [11] Not all vessels in the human brain exhibit BBB properties.
Natural barriers have been important factors in human history, by obstructing migration and invasion. For example, Jared Diamond argues that West European nations have been the dominant powers of the last 500 years because Europe's many natural barriers divided it into competing nation-states and this competition forced the European nations to ...
Research has shown that nanoplastics can penetrate biological barriers, induce toxicity, and accumulate in organs, leading to various health issues [8]. Nanoplastics have been found in drinking water, food, and air, making human exposure ubiquitous [9].
Human-mediated gene flow: The captive genetic management of threatened species is the only way in which humans attempt to induce gene flow in ex situ situation. One example is the giant panda which is part of an international breeding program in which genetic materials are shared between zoological organizations in order to increase genetic ...
A scanning electron microscope image of normal circulating human blood. One can see red blood cells, several knobby white blood cells including lymphocytes, a monocyte, a neutrophil, and many small disc-shape platelets. White blood cells (WBCs) are also known as leukocytes. Most leukocytes differ from other cells of the body in that they are ...
Human ecology is an interdisciplinary and transdisciplinary study of the relationship between humans and their natural, social, and built environments.