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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585
Failure cases
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Sources
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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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Setting up and taking down reflux glassware
04:37 YouTube (Curated Tutorials)
Organic Chemistry

Setting up and taking down reflux glassware

YouTube (Curated Tutorials) ·

How to Run an ELISA Assay – Invitrogen Kit Step-by-Step Tutorial
04:47 Thermo Fisher Scientific
Immunology

How to Run an ELISA Assay – Invitrogen Kit Step-by-Step Tutorial

Thermo Fisher Scientific ·

Western Blotting Protocol
09:38 Cell Signaling Technology
Biochemistry

Western Blotting Protocol

Cell Signaling Technology ·

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) ·

Western Blot Troubleshooting Guide
10:14 Cell Signaling Technology
Biochemistry

Western Blot Troubleshooting Guide

Cell Signaling Technology ·

Restriction Digest Analysis
08:02 Addgene
Cell Biology

Restriction Digest Analysis

Addgene ·

Recently Added

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Microfluidic Picoliter Bioreactor for Microbial Single-cell Analysis: Fabrication, System Setup, and Operation
12:04 JoVE (Open Access)
Microbiology

Microfluidic Picoliter Bioreactor for Microbial Single-cell Analysis: Fabrication, System Setup, and Operation

JoVE (Open Access) ·

Enhanced Genetic Analysis of Single Human Bioparticles Recovered by Simplified Micromanipulation from Forensic ‘Touch DNA’ Evidence
11:49 JoVE (Open Access)
Cell Biology

Enhanced Genetic Analysis of Single Human Bioparticles Recovered by Simplified Micromanipulation from Forensic ‘Touch DNA’ Evidence

JoVE (Open Access) ·

Non-plasma Bonding of PDMS for Inexpensive Fabrication of Microfluidic Devices
04:45 JoVE (Open Access)
Cell Biology

Non-plasma Bonding of PDMS for Inexpensive Fabrication of Microfluidic Devices

JoVE (Open Access) ·

Mouse Hindbrain Ex Vivo Culture to Study Facial Branchiomotor Neuron Migration
10:57 JoVE (Open Access)
Neuroscience

Mouse Hindbrain Ex Vivo Culture to Study Facial Branchiomotor Neuron Migration

JoVE (Open Access) ·

Robot-Assisted Radical Antegrade Modular Pancreatosplenectomy Including Resection and Reconstruction of the Spleno-Mesenteric Junction
12:34 JoVE (Open Access)
Organic Chemistry

Robot-Assisted Radical Antegrade Modular Pancreatosplenectomy Including Resection and Reconstruction of the Spleno-Mesenteric Junction

JoVE (Open Access) ·

Experimental Manipulation of Body Size to Estimate Morphological Scaling Relationships in Drosophila
06:00 JoVE (Open Access)
Cell Biology

Experimental Manipulation of Body Size to Estimate Morphological Scaling Relationships in Drosophila

JoVE (Open Access) ·