In cellular biology, pinocytosis, otherwise known as fluid endocytosis and bulk-phase pinocytosis, is a mode of endocytosis in which small molecules dissolved in extracellular fluid are brought into the cell through an invagination of the cell membrane, resulting in their containment within a small vesicle inside the cell.

2019年3月26日 · Pinocytosis is the method by which a cell absorbs small particles outside the cell and brings them inside. The word pinocytosis comes from the Greek for “cell drinking”. During this process, the cell surrounds particles and then “pinches off” part of its membrane to enclose the particles within vesicles, which are small spheres of the membrane.

胞饮作用（pinocytosis）是指物质进入活细胞膜内的主动运输形式。 活细胞摄取微粒时，首先是细胞的原生质围绕各种物质流动，然后重新形成细胞膜，并把这些物质包裹起来，以后这些粒子就变成细胞的内含物。 若被卷入的是液体，它就在原生质中形成充满液体的小液囊（胞饮泡）。 这称为胞饮作用。 [1] 胞饮作用是非选择性吸收。 它在吸收水分的同时,把水分中的物质如各种盐类和大分子物质甚至病毒一起吸收进来。 番茄和南瓜的花粉母细胞、蓖麻和松的根尖细胞中都有胞 …

2025年1月31日 · Pinocytosis primarily refers to the uptake of extracellular fluids and small molecules by a cell, whereas phagocytosis is a process by which the cell membrane invaginates around large macromolecular structures (e.g., proteins and viruses) that are otherwise unable to diffuse into the cell.

pinocytosis, a process by which liquid droplets are ingested by living cells. Pinocytosis is one type of endocytosis, the general process by which cells engulf external substances, gathering them into special membrane-bound vesicles contained within the cell.

2024年4月24日 · Pinocytosis or “cell drinking” is a crucial cellular process that involves ingesting liquid and dissolved solutes. The fluid typically includes fat droplets, nutrients, and sometimes antigens. In pinocytosis, cells “drink” fluids and dissolved molecules by closing pockets in …

Pinocytosis is an active mechanism involved in the transfer of microbiologic particles (viruses, bacteria) and macromolecules such as immunoglobulins (about 160 kDa). These immunoglobulins are mostly IgG, and constitute the passive immunity of children before they are old enough to be vaccinated.

Discovered by Warren Lewis in the late 1920s, pinocytosis is a type of endocytosis through which cells take in fluids along with dissolved solutes/nutrients from the extracellular matrix. Here, various molecules (ions, sugars, etc.) trigger the process …

2023年2月17日 · Pinocytosis, also known as fluid endocytosis, fluid-phase endocytosis, and bulk-phase pinocytosis, is defined as the process where a cell ingests tiny particles suspended in the extracellular fluid by forming an endocytic vesicle called a pinosome.

2024年10月27日 · Pinocytosis is a cellular process involved in nutrient uptake and immune function. It enables cells to internalize extracellular fluid, allowing them to absorb nutrients and other dissolved substances necessary for survival and growth.