Which cell structure, important in endocytosis and exocytosis, promotes the movement of materials within a cell? What do you mean by phagocytosis, endocytosis and exocytosis? What is the function of cytoplasmic Hsc70 during endocytosis? Does endocytosis require energy?
Effects of progesterone on sperm function: mechanisms of action Progesterone interacts with specific sperm binding sites that, unlike the classic nuclear receptors, are located on the plasma membrane of the spermatozoon. ... A.,E.,Calogero,... - 《Human Reproduction》 被引量: 130发表: 2000年 ...
The protoplasm can be defined as the fluid part of a cell that is surrounded by a limiting membrane which is known as the plasma membrane, which selectively determines what may enter or exit the cell. It is a colloidal solution of various proteins, lipids, carbohydrates, and inorganic salts ...
Blay, J., and Hollenberg, M.D.: The nature and function of polypeptide growth factor receptors in the human placenta. J. Dev. Physiol. 12: 237–248, 1989. PubMedCASGoogle Scholar Bleyl, U.: Histologische, histochemische und fluoreszenzmikroskopische Untersuchungen an Hofbauer-Zellen. Arch...
The function of APCs is to present the antigen from the invading infectious agent to the B and T lymphocytes that possess specificity for the epitopes on that antigen. B lymphocytes interact directly with the antigen, via their cell surface “B cell receptor (BCR 1 ),” to differentiate into...
The plasma membrane dopamine transporter (DAT) is found exclusively in dopamine neurones and seems to be the defining molecule of the dopamine neurone. It provides effective control over the intensity of dopamine-mediated signalling by recapturing the neurotransmitter released by presynaptic neurones. Po...
Such crosstalk at the cell surface or in or immediately beneath the plasma membrane may be a function of the binding of extracellular matrix (ECM) proteins by the integrin or messaging from within the cell (inside-out signaling). We have described on αvβ3 the existence of specific, high-...
The annulus is an electron-dense ring structure that surrounds the axoneme and compartmentalizes the sperm flagellum into two parts: the midpiece and the principal piece. The function of the annulus as a diffusion barrier in the mature spermatozoon is no
Non-professional phagocytes, such as fibroblasts, epithelial cells and endothelial cells, can engulf a variety of particles, including their dying brethren, but their primary function is not phagocytosis. Plasma membrane blebs Globular protrusions seen at the plasma membrane. Membrane blebs are dynamic...
b. What structural aspect of this tissue makes it good at doing this? What organ produces most of the plasma proteins? Fill in the blank. The cell membrane is mainly composed of ___. What kind of cell performs the main function of the nervous system? A cellular component of the innate...