Index of stimulation was calculated as the ratio between induced PHA proliferation and spontaneous division of splenocytes.
Spontaneous division of lymphocytes was increased following IL-2 administration and it is suggested that clearance of IL-2 in vivo may reflect, in part, absorption by activated lymphocytes in the circulation.
We observed a repeat cycle of cell deformation and cell protrusion formation at 105 160 min and 185 200 min (arrows), each followed by a spontaneous division generating progeny cells after 170 min and 205 min. It thus appears that the general features of the L-form mode of cell proliferation are conserved between Gram-positive and Gram-negative bacteria.
Both B cell populations underwent several rounds of spontaneous cell division, as expected from previous studies in which immature B cells were transferred into non-Tg or sHEL recipients in the absence on T cell help [ 12].
Cell division or spontaneous exocytosis is responsible for such labeling loss.
Our microfluidic data directly show rates of 0.021±0.008 spontaneous DSBs per cell division, and the use of our data to re-interpret and correct previous indirect, low-resolution data (Pennington and Rosenberg, 2007) indicates a roughly similar rate of 0.011 spontaneous DSBs per cell division ('Results'Results
Recent mathematical predictions attribute spontaneous mutations during cell division as initiators of PDA, making early detection and effective therapy the only two elements determining survival (Tomasetti and Vogelstein, 2015).
The authors went on to characterize the transcriptome associated with the spontaneous reactivation of mycobacterial division in the culture, as a model for the emergence from latency in the granuloma.
As a result of this mechanism of asymmetric division, any spontaneous mutations or errors that may develop during DNA replication would occur in the newly synthesized strand and be passed along to the daughter cell, reducing the accumulation of genetic errors and, subsequently, cancer risk of the long-lived parent cell.
In microfluidic chambers, we captured images of growing microcolonies from the 1-cell to ∼100-cell stage measuring divisions and appearance of spontaneous GamGFP foci while varying cell-division rates by withdrawal of glucose from the flowing medium.
We use the agent-based model to simulate tumour development dynamics with various cellular migration potentials (i.e., μ=0, 5 and 15 cell widths per day), non-stem cancer cell proliferation capacities (i.e., ρmax=10, 15, 20 divisions), and spontaneous cell death rates (α=0 and 5% per day).
