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The following is the known doubling time for the following cells: Cell types Source Doubling time Mesenchymal Stem Cell Mouse 21–23 hours [6] Cardiac/heart stem cell
The doubling time of SH-SY5Y cells during the exponential phase is 67.3 h ± 5.8 h. The average generation time (G) was 4.23 ± 0.84 d, the division rate per cell unit (r) was 0.25 ± 0.05, and the multiplication factor (V) was 3.49 ± 1.21.
4T1 cells grow in 37 °C with 95% air and 5% of carbon dioxide (CO 2). Their average doubling time is 14 hours. The base medium for this cell line is RPMI-1640 Medium with a fetal bovine serum in a final concentration of 10%. 4T1 cells should not be allowed to become 100% confluent. Subculturing at 80% confluence is recommended.
Though HT-29 cells can proliferate in cell culture lacking growth factors with a doubling time of around 4 days, the doubling time can be reduced to one day with added fetal bovine serum. [2] The cells have high glucose consumption, and in standard medium containing 25 mM glucose and 10% serum, remain undifferentiated. [1]
The LNCaP (Lymph Node Carcinoma of the Prostate) cell line was established from a metastatic lesion of human prostatic adenocarcinoma.The LNCaP cells grow readily in vitro (up to 8 x 10 5 cells/sq cm; doubling time, 60 hr), form clones and are highly resistant to human fibroblast interferon. [1]
The doubling time is about 36–48 hours. The cell line was derived from a 36-year-old woman who was originally reported to have acute promyelocytic leukemia at the MD Anderson Cancer Center. [1] HL-60 cells predominantly show neutrophilic promyelocytic morphology. [1]
If growth is not limited, doubling will continue at a constant rate so both the number of cells and the rate of population increase doubles with each consecutive time period. For this type of exponential growth, plotting the natural logarithm of cell number against time produces a straight line.
The average doubling time is 19 to 50 hours. 1 mM sodium pyruvate, penicillin (100 units/ml) and streptomycin (100 μg/ml) are also commonly added to inhibit bacterial contamination. Cultures should be maintained at cell densities in the range 2-9x10 5 cells/ml at 37 °C, 5% CO 2. Cells are non-adherent. [5]