This article provides a comprehensive guide for transitioning cell cultures from traditional bicarbonate-buffered environments to media that function without carbon dioxide. Because cells must adjust their metabolism and internal stability to accommodate new buffering agents like phosphates, the text emphasizes a gradual weaning process involving specific ratios of old and…
Categoria: protocols
What Is a Cell? A Simple Explanation with a Real Experiment
This guide introduces the basic concepts of cell biology by explaining what a cell is and how it works. It describes the main parts of a cell, including the cell membrane, the cytoplasm, and the genetic material that controls how the cell grows and functions. To help understand these ideas,…
Simple Experiment: The Dynamics of Yeast Fermentation and Cellular Metabolism
Recommended level: Middle school (ages 11–14) Difficulty: Easy Suitable for: students, beginners, and introductory biology courses This instructional text details a scientific experiment designed to observe yeast fermentation and the metabolic processes of living cells. By placing varying amounts of sugar into bottles with yeast and warm water, the guide demonstrates how nutrient availability directly influences the…
Analysis of lipid droplets by microscopic evaluation And Oil-red-O
ORO and hematoxylin staining of A549 cells Oil-red-O: description of the method Oil red-o, a sensitive stain for neutral lipids, has been proven to be successful in assessing lipid accumulation in tissue histological samples under both physiological and pathological conditions. [Mehlem, A., Hagberg, C., Muhl, L. et al. Imaging of neutral lipids…
Indirect cell number quantitation: protein content
During in vitro studies, researchers could have to evaluate the number of cells to estimate the metabolic or pharmacological effects of specific compounds. However, estimating cell density in vitro by direct cell counting is a laborious and time-consuming task, which is why indirect methods have been developed to estimate cell…
Cell quantitation
The growth – here conceived as an increase in the number – of cells in culture is influenced by numerous factors which include the presence in the medium of growth factors and hormones (the concentration of which can vary in different batches of serum), environmental conditions (for example the temperature of…
How to Prepare Glass Coverslips for Cell Culture: Step-by-Step Protocol
This guide outlines a comprehensive protocol for preparing glass coverslips to ensure they are suitable for high-resolution microscopy and cell growth. Because standard glass can contain harmful alkaline residues or heavy metals, the text emphasizes a multi-step cleaning process using neutral detergents and acid treatment with hydrochloric acid. These steps are essential for removing contaminants and modifying the glass…
Additional Tips for Sterile Handling in Cell Culture
The provided text focuses on the standardized procedures required to maintain a decontamination-free environment during laboratory work. It outlines the fundamental principles of aseptic technique, emphasizing the necessity of protecting biological samples from external impurities. By following these sterile handling guidelines, researchers can ensure the integrity and reliability of their experimental data. The instructions specifically detail how to manage cell…
Personal Hygiene in the Cell Culture Laboratory
Maintaining proper personal hygiene is essential when working in a cell culture laboratory. Poor hygiene practices can introduce contamination during the manipulation of cells, media, and reagents. Hands Hand hygiene is one of the most important factors in preventing contamination. Handwashing with soap and water is effective in reducing the…
Cell Culture Solution Preparation: SOPs for Media and Reagents
These procedures are intended as general guidelines and may be adapted depending on specific laboratory protocols 🔬 Preparation of solutions for cell culture Preparing solutions for cell culture requires particular attention because all solutions must be sterile at the time of use. Even small contamination can compromise cell viability and…