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The release of cytokines, chemokines, and other immune-modulating mediators released from innate immune cells, including eosinophils, neutrophils, macrophages, dendritic cells, mast cells, and epithelial cells, is an important event in immunity. Cytokine synthesis and transportation occurs through the canonical protein trafficking pathway associated with endoplasmic reticulum and Golgi. How cytokines are released upon their exit from the trans-Golgi network varies enormously between cell types, and in many cells this has not yet been characterized. This issue delves into the plethora of cytokines released by innate immune cells, and where possible, shines light on specific mechanisms that regulate trafficking and release of Golgi-derived vesicles. Each cell type also shows varying degrees of dependency on microtubule organization and actin cytoskeleton remodeling for cytokine secretion. Understanding the mechanisms of cytokine secretion will reveal the inner workings of individual innate immune cell types, and allow identification of critical regulatory steps in cytokine release.

Cytokines. --- Chemokines. --- secretory granules --- Dendritic Cells --- GTPases --- SNAREs --- Neutrophils --- Epithelial Cells --- degranulation --- Macrophages --- Recycling endosomes --- Eosinophils

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This book covers the molecular structures and the cellular and in vivo function of endosomes and lysosomes, i.e. intracellular vesicles which are involved in many cellular processes such as endocytosis, intracellular trafficking, degradation of material from inside (e.g. autophagy) and outside the cell as well as exocytosis. Membranes of endolysosomal organelles contain an amazing number and diversity of ion channels. These ion channels are the topic of the present book that focusses on describing the structure, the biophysical properties, physiological functions of endolysosomal ion channels at the molecular, cellular and in vivo level. .

Histology. Cytology --- Biology --- History of human medicine --- Human physiology --- farmacologie --- biologie --- fysiologie --- cytologie --- histologie --- Endosomes. --- Ion channels. --- Lysosomes.

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This Special Issue of Entropy, titled “Recent Advances in Single-Particle Tracking: Experiment and Analysis”, contains a collection of 13 papers concerning different aspects of single-particle tracking, a popular experimental technique that has deeply penetrated molecular biology and statistical and chemical physics. Presenting original research, yet written in an accessible style, this collection will be useful for both newcomers to the field and more experienced researchers looking for some reference. Several papers are written by authorities in the field, and the topics cover aspects of experimental setups, analytical methods of tracking data analysis, a machine learning approach to data and, finally, some more general issues related to diffusion.

Research & information: general --- Physics --- diauxic growth --- replicator equation --- mesoscopic model --- integro-differential equations --- anomalous diffusion --- statistical analysis --- single-particle tracking --- trajectory classification --- fractional Brownian motion --- estimation --- autocovariance function --- neural network --- Monte Carlo simulations --- multifractional Brownian motion --- power of the statistical test --- machine learning classification --- feature engineering --- confinement --- information theory --- Brownian particle --- stochastic thermodynamics --- CTRW --- diffusing-diffusivity --- occupation time statistics --- wound healing dynamics --- single pseudo-particle tracking --- phase contrast image segmentation --- 3D single-particle tracking --- Fisher information --- non-uniform illumination --- SPT --- deep learning --- residual neural networks --- random walk --- heterogeneous --- endosomes --- single particle trajectory --- stochastic processes --- trapping