Sentences with phrase «direct cell contact»

Not exact matches

First, any direct effect of my aims on cells remote from my soul will be garbled and intermixed with the indirect effects of the same aims as mediated by many routes of physical contact — the situation is analogous to the problem of understanding a speaker in an echo chamber.

This type of sensor also glows in the presence of molecules secreted by E. coli, so the material doesn't have to be in direct contact with bacterial cells to flag food contamination.

Dendritic cells mediate sensory nerve innervation and regeneration through direct cell - to - cell contact and CNTF secretion.

Bacteria had to be in direct contact with tumor cells to speed growth, but exactly how the bacteria do that isn't yet known.

In earlier studies involving animal models and human cancer cell lines, researchers found that breast cancer spreads when three specific cells are in direct contact: an endothelial cell (a type of cell that lines the blood vessels), a perivascular macrophage (a type of immune cell found near blood vessels), and a tumor cell that produces high levels of Mena, a protein that enhances a cancer cell's ability to spread.

Interactions with other cells, through direct contact or via various dissolved factors, are especially important.

«The Lewy bodies are big aggregates and they're sitting in the cell, but they don't come into direct contact with the mitochondria in the way pα - syn * does,» Lasmézas explains.

Current methods for doing this involve directly probing cells with expensive instruments, such as atomic force microscopes and optical tweezers, which make direct, invasive contact with the cells.

Until recently, scientists assumed that ephrin / Eph signal transmission could only occur through direct cell - cell contact.

It had always seemed clear that ephrins and Ephs could only trigger a signaling process by direct contact between two cells.

Northwestern Medicine scientists have discovered that two key cellular structures, called mitochondria and lysosomes, come into direct contact with each other in the cell to regulate their respective functions.

Filtration in the glomerulus is performed by cells called «podocytes» that are in direct contact with the blood vessels.

The researchers are manipulating cells so that they can look at direct contact between two cell membranes or precisely control and maintain a variety of distances between cells and determine how cells communicate.

Human - associated bacteria disperse into and throughout the built environment by three primary mechanisms: (1) direct human contact with indoor surfaces; (2) bioaerosol particle emission from our breath, clothes, skin and hair; and (3) resuspension of indoor dust containing previously shed human skin cells, hair and other bacteria - laden particles.

The epidermis is innervated by free sensory nerve endings that establish direct contact with skin cells.

Culture of Pig Induced Pluripotent Stem Cells without Direct Feeder Contact in Serum Free Media.

The induction of Tregs by MSCs involves not only direct contact between MSCs and CD4 + cells, but also the secretion of soluble factors such as PGE2 and TGF - β1 42.

T cells exert their actions in two ways, either through direct cell - cell contact which involves transmembrane proteins present on both the T cell and interacting cell, or by the secretion of soluble proteins termed cytokines which have receptors on many lymphoid and some non-lymphoid cell types.

This toxicity is mediated by the fibrillar form of the amylin peptide and requires direct contact of the fibrils with the cell surface.

«We have designed synthetic biomaterials that can be used similarly to dental fillings but can be placed in direct contact with pulp tissue to stimulate the native stem cell population,» said Celiz.

While erythrocyte invasion is a rapid process, the brief extracellular exposure of merozoites outside of their intra-erythrocytic niche places them in direct contact with host antibodies, which contribute to naturally acquired immunity to malaria [8, 9]; therefore, merozoite cell surface and secreted proteins have long been considered attractive targets for rational vaccine development.

Ultimately, about 70 % of our immune cells are found in the digestive system and thus they are in direct contact with the food we eat every day.

The mucosal layer of the gut generally shields the gut and immune cells lining the digestive tract from direct contact with bacteria.

However, when the mucosal layer is depleted, the cells lining our gut are exposed to direct contact to gut bacteria that feed on food.

However, in order for silver to be effective in - vivo, the silver particles and / or ions must reach the pathogens and be able to attach to special receptors located on bacterial cell walls (silver ions) or otherwise act in direct contact with any disease causing organisms (silver particles); the silver must be in an effective state and the biological terrain must be conducive to the entire process.

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Any cat can become infected through direct or indirect contact with an infected animal, or anything (dishes, bedding, etc.) that has been contaminated by the cat's skin cells or hairs.

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