Hands-On Cell Culture: Expert Protocol Walkthrough

moderate

Contact Inhibition and Nutrient Depletion Cell Death

Cultures exceeding 80-100% confluence show central necrosis, detachment of cell sheets, and debris accumulation. Media becomes acidic (yellow) and depleted.

💡 4 · ✓ 5

moderate

Temperature-Induced Protein Precipitation in Culture Media

Turbidity or visible precipitates appear in cell culture media after temperature changes. High-molecular weight plasma proteins fall out of solution, creating visible cloudiness that may interfere with microscopy and imaging assays.

💡 4 · ✓ 4

moderate

Evaporation-Induced Salt Crystallization on Culture Surfaces

Crystal precipitates form readily on culture flask and plate surfaces. Media concentration increases due to water loss, causing salt components to exceed solubility limits and crystallize on plastic surfaces.

💡 4 · ✓ 4

moderate

Replicative Senescence After Excessive Passaging

Primary or finite cell lines show progressive slowing of growth, enlarged flattened morphology, failure to reach confluence, and increased spontaneous death after many passages.

💡 4 · ✓ 5