Technical Support
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Hot Products
- In-Stock Tumor Cell Lines
- Human Orbital Fibroblasts
- Human Microglia
- Human Pulmonary Alveolar Epithelial Cells
- Human Colonic Fibroblasts
- Human Type II Alveolar Epithelial Cells
- Human Valvular Interstitial Cells
- Human Thyroid Epithelial Cells
- C57BL/6 Mouse Dermal Fibroblasts
- Human Alveolar Macrophages
- Human Dermal Fibroblasts, Adult
- Human Lung Fibroblasts, Adult
- Human Retinal Muller Cells
- Human Articular Chondrocytes
- Human Retinal Pigment Epithelial Cells
- Human Pancreatic Islets of Langerhans Cells
- Human Kidney Podocyte Cells
- Human Renal Proximal Tubule Cells
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How soon can the culture medium be changed after thawing primary cells?
It is generally recommended to perform the first medium change 12–24 hours after thawing to avoid disturbing newly attached cells. If cell attachment is slow, the medium change can be slightly delayed.
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What should I do if primary cells show heterogeneous morphology during culture?
Moderate heterogeneity is normal, especially for cells derived from complex tissues. If obvious abnormal shapes or significant cell death occur, check the culture medium composition, CO₂ concentration, temperature, and for potential contamination.Moderate heterogeneity is normal, especially for cells derived from complex tissues. If obvious abnormal shapes or significant cell death occur, check the culture medium composition, CO₂ concentration, temperature, and for potential contamination.
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What is the typical proliferation rate of primary cells?
Primary cells generally proliferate more slowly than established cell lines, with most having a doubling time of 48–96 hours. If the proliferation rate drops significantly, check the culture medium, cell density, or whether the cells have entered senescence.
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Do primary cells require specialized culture media?
Yes. Different types of primary cells have varying requirements for growth factors, serum concentrations, and extracellular matrix components. It is recommended to use AcceGen’s specialized culture media to ensure stable cell conditions.
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Is it normal to see a small number of floating cells after thawing primary cells?
Yes, this is normal. Some cells may not survive the freeze-thaw process and appear floating. They can be gently removed during medium change without affecting the overall culture quality.
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What precautions should be taken when working with primary cells?
It is recommended to strictly follow aseptic techniques, avoid temperature fluctuations, and operate according to the specified culture medium formulation and recommended seeding density. Primary cells are generally not suitable for use at high passage numbers and should not be exposed to trypsin for prolonged periods, as over-digestion may lead to loss of cell viability and functionality.
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Why is there significant batch-to-batch variation among primary cells?
Primary cells are derived from different donors, and variations in donor age, gender, health status, genetic background, as well as isolation methods, can all affect cell performance. Such biological variability is an inherent characteristic of primary cells.
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Why are primary cells more difficult to culture than cell lines?
Primary cells are generally more sensitive and have stricter requirements for culture conditions, including medium composition, cell seeding density, matrix coating, and gas environment. In addition, unlike immortalized cell lines, primary cells have limited proliferative capacity and lower tolerance to environmental stress. Therefore, more careful handling and optimized culture conditions are required during operation.
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How long does it take for primary cells to normally adhere after thawing?
Most adherent primary cells gradually attach to the culture surface within 2–16 hours after thawing. Some cell types, such as neurons or vascular endothelial cells, may require a longer attachment time. If the cells fail to attach within the expected timeframe, please contact AcceGen technical support promptly for assistance.
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Can primary cells be passaged?
Most primary cells have a limited proliferative capacity and can only be passaged for a few generations, depending on the specific cell type. With each passage, primary cells gradually lose their original biological functions. Therefore, it is recommended to use the cells within the suggested passage range. Terminally differentiated primary cells cannot be expanded or passaged.
