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Laboratory Protocols & SOPs Library

3,200+ step-by-step lab protocols and SOPs for cell culture, staining, PCR, protein work and microbiology, with reagents, conditions and evaluation criteria.

3228 articles
Laboratory Protocols & SOPs Library

HepG2 Cell Steatosis Model Establishment Protocol

HepG2 is a human hepatocellular carcinoma cell line with hepatocyte-like features. Under excess free fatty acid (FFA) exposure, intracellular triglycerides (TG) markedly accumulate and abundant lipid droplets form, phenocopying hepatocyte steatosis in morphology and lipid metabolism.

2025-11-27 03:21:05 Updated
Laboratory Protocols & SOPs Library

EdU Staining: Basic Principle and Experimental Workflow

5-Ethynyl-2′-deoxyuridine (EdU) is a thymidine analogue incorporated into nascent DNA during S phase. Like BrdU, it labels proliferating cells, but—unlike BrdU, which requires harsh acid/base or heat denaturation to expose epitopes—EdU detection exploits its terminal alkyne for rapid, ...

2025-11-27 03:21:04 Updated
Laboratory Protocols & SOPs Library

LPS-Induced Cellular Inflammation Model: Experimental Procedure

Lipopolysaccharide (LPS), a major component of the outer membrane of Gram-negative bacteria, binds to the TLR4 receptor and its co-receptors (e.g., CD14, MD-2) on macrophages, activating NF-κB, MAPK, and other pathways and inducing production/secretion of inflammatory cytokines such as TNF-α, ...

2025-11-27 03:03:06 Updated
Laboratory Protocols & SOPs Library

TRAP Staining: Principle and Procedure

Use tartrate-resistant acid phosphatase (TRAP) activity staining to selectively label osteoclasts and other TRAP-positive cells. By observing cell morphology and staining intensity under a microscope, perform morphological assessment and semi-quantitative analysis of changes related to ...

2025-11-27 02:42:06 Updated
Laboratory Protocols & SOPs Library

CCK-8 Cell Viability Assay Protocol

Cell Counting Kit-8 (CCK-8) is a WST-8–based cell viability reagent commonly used for cell proliferation and cytotoxicity evaluation. In the presence of an electron-mediating agent, the water-soluble tetrazolium salt WST-8 is reduced by intracellular mitochondrial dehydrogenases to an orange ...

2025-11-20 08:21:06 Updated
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