Home › Cell Biology › Cell Transfection Experimental Steps Overview
Cell Biology Bilibili (China-Accessible Mirrors)

Cell Transfection Experimental Steps Overview

🚨 Failure Case Library (7) + Submit your own case

critical
Massive cell death after transfection — reagent toxicity is too high
Cells become rounded and detached after transfection; CCK-8 shows a sharp drop in viability vs. mock-transfected control.
💡 4 · ✓ 4
severe
Very few cells are fluorescent — transfection efficiency is extremely low
Microscopy shows scattered positive cells; flow cytometry confirms positivity rate is very low (< 5 %).
💡 5 · ✓ 5
severe
Very Low Transfection Efficiency
Transfection efficiency is significantly lower than expected with poor gene expression
💡 7 · ✓ 9
moderate
mRNA Transfection Toxicity
Cell toxicity observed during mRNA transfection experiments with MessengerMAX reagent
💡 5 · ✓ 7
moderate
Very high replicate-well variation (poor reproducibility)
Parallel wells show very different fluorescence intensity / positive-cell rates; data fluctuates wildly between replicates.
💡 4 · ✓ 4
moderate
Lipid Reagent Accidentally Frozen
Transfection reagent was frozen instead of stored at 4°C, potentially affecting performance
💡 2 · ✓ 3
moderate
Transfections Not Reproducible
Transfection efficiency shows high variability between experiments and among replicates
💡 5 · ✓ 7
💬 Comments coming soon