Open Lab Video Library

See every step. Skip every pitfall.

Lab videos and hard-won lessons in one place, so you walk in prepared.

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Avoid the Pitfalls

Real mistakes other researchers hit, and how to get them right.

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Pitfall Transfection

Massive cell death after transfection — reagent toxicity is too high

Why it fails Transfection reagent dose is too high or inherently toxic

Pitfall qPCR (RT-qPCR)

No amplification — Ct value missing or > 40

Why it fails Template (RNA / cDNA) degraded or concentration too low

Pitfall Cell Culture (Contamination)

Mycoplasma Contamination - Silent Growth Inhibitor

Why it fails Introduction through poor aseptic technique (mycoplasma found on human skin)

Pitfall Plasmid Construction

Confirmed colony later shows recombination or deletion

Why it fails Insert contains repeat sequences, LTRs, or other unstable elements that recombine

Pitfall Western Blot

No bands at all (blank membrane)

Why it fails Transfer failed or membrane transfer was incomplete

Pitfall Colony Formation Assay

No colonies at all — total failure

Why it fails Seeding density was too low (or no live cells survived)

Featured

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Popular

Trending protocols, by views on Labtorial and their source platforms.

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Visualizing Genetic Variants, Short Targets, and Point Mutations in the Morphological Tissue Context with an RNA In Situ Hybridization Assay
10:57 JoVE (Open Access)
Biochemistry

Visualizing Genetic Variants, Short Targets, and Point Mutations in the Morphological Tissue Context with an RNA In Situ Hybridization Assay

JoVE (Open Access) ·

DuoSet ELISA — Sandwich ELISA Hands-on Protocol (Bio-Techne)
05:55 Bilibili (China-Accessible Mirrors)
Biochemistry

DuoSet ELISA — Sandwich ELISA Hands-on Protocol (Bio-Techne)

Bilibili (China-Accessible Mirrors) ·

Western Blotting Protocol
09:38 Cell Signaling Technology
Biochemistry

Western Blotting Protocol

Cell Signaling Technology ·

Western Blot Troubleshooting Guide
10:14 Cell Signaling Technology
Biochemistry

Western Blot Troubleshooting Guide

Cell Signaling Technology ·

Setting up and taking down reflux glassware
04:37 YouTube (Curated Tutorials)
Organic Chemistry

Setting up and taking down reflux glassware

YouTube (Curated Tutorials) ·

Using the GELFREE 8100 Fractionation System for Molecular Weight-Based Fractionation with Liquid Phase Recovery
07:57 JoVE (Open Access)
Biochemistry

Using the GELFREE 8100 Fractionation System for Molecular Weight-Based Fractionation with Liquid Phase Recovery

JoVE (Open Access) ·

Recently Added

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From a Natural Product to Its Biosynthetic Gene Cluster: A Demonstration Using Polyketomycin from Streptomyces diastatochromogenes Tü6028
09:08 JoVE (Open Access)
Analytical Chem

From a Natural Product to Its Biosynthetic Gene Cluster: A Demonstration Using Polyketomycin from Streptomyces diastatochromogenes Tü6028

JoVE (Open Access) ·

Modeling Stroke in Mice: Permanent Coagulation of the Distal Middle Cerebral Artery
08:14 JoVE (Open Access)
Analytical Chem

Modeling Stroke in Mice: Permanent Coagulation of the Distal Middle Cerebral Artery

JoVE (Open Access) ·

A Novel Clinical Grade Isolation Method for Human Kidney Perivascular Stromal Cells
09:05 JoVE (Open Access)
Immunology

A Novel Clinical Grade Isolation Method for Human Kidney Perivascular Stromal Cells

JoVE (Open Access) ·

Atmospheric-pressure Molecular Imaging of Biological Tissues and Biofilms by LAESI Mass Spectrometry
09:22 JoVE (Open Access)
Analytical Chem

Atmospheric-pressure Molecular Imaging of Biological Tissues and Biofilms by LAESI Mass Spectrometry

JoVE (Open Access) ·

The Vermicelli and Capellini Handling Tests: Simple quantitative measures of dexterous forepaw function in rats and mice
09:37 JoVE (Open Access)
Neuroscience

The Vermicelli and Capellini Handling Tests: Simple quantitative measures of dexterous forepaw function in rats and mice

JoVE (Open Access) ·

Challenges in Rheological Characterization of Highly Concentrated Suspensions — A Case Study for Screen-printing Silver Pastes
08:42 JoVE (Open Access)
Cell Biology

Challenges in Rheological Characterization of Highly Concentrated Suspensions — A Case Study for Screen-printing Silver Pastes

JoVE (Open Access) ·