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How do you calculate doubling time of a cell culture?

The doubling time is the number of hours it takes for a cell population to double in number. Doubling time is calculated using the following equation:Number of hours from 24 hours after seeding until passage/Population Doublings = Doubling Time...
Missing: stable linesGuideline

How often do mycoplasma contaminations occur in cell cultures?

A conservative estimate states that between 15-35% of all continuous cell cultures are contaminated with mycoplasma (Drexler HG, Uphof CC; 2002), some estimates are even higher (up to 80 % in some countries (Koshimizu K, Kotani H; 1981).
Missing: stable linesGuideline

Where are Lonza's human Mesenchymal Stem Cells isolated from?

Lonza's human Mesenchymal Stem Cells (hMSCs) PT-2501 are isolated from bone marrow withdrawn from bilateral punctures of the posterior iliac crests of normal volunteers between the ages of 18 and 45 years old. Please see the linked document for more...
Missing: stable linesGuideline

Can I plate cells at a higher initial concentration than the Clonetics™ and Poietics™ plating protocol recommends? What is the minimum dilution of DMSO most cells can tolerate?

Lonza's recommended plating density for primary cells is established for two main reasons: To ensure residual DMSO is sufficiently diluted while cells are initially attaching and To allow a maximum number of population doublings per passage...
Missing: stable linesGuideline

I've had my Clonetics™ Cells in culture for a few months, they're no longer growing and don't look like healthy cells, what's wrong?

All Clonetics™ Cells are primary cells with a finite life span. Most Clonetics™ Cells are guaranteed for 10 – 15 additional population doublings, which equates to about 2 – 3 passages. As cell death begins to occur, morphology and cell performance...
Missing: stable linesGuideline

Where are Lonza’s HSMM cells isolated from?

Lonza obtains our Human Skeletal Muscle Myoblasts( HSMM), both diseased and normal, from quadriceps or psoas muscle tissue.
Missing: stable linesGuideline

What are differences between the endothelial cell types isolated from different locations in the body?

The group of Chi et al analayzed various endothelial cells. Tissue-specific expression patterns in different tissue microvascular endothelial cells suggest they are distinct differentiated cell types that play roles in the local physiology...
Missing: stable linesGuideline

What is the difference between Lonza’s various renal cell types?

The primary differences between each of Lonza’s various renal cell types are the isolation location and the markers for which each cell types tests positive.Human Renal Epithelial Cells (HRE; Catalog no. CC-2556): Lonza’s Human Renal Epithelial (HRE...
Missing: stable linesGuideline

Do intracellular ATP levels differ between different cell types?

Healthy cells in culture contain maximal amounts of ATP and a wide range of metabolic stimuli do not increase these ATP levels.  Any increase in the ATP concentration of a culture can therefore be associated with an increase in the number...
Missing: stable linesGuideline

Why do I need to store cell culture media in the dark?

Most tissue culturists will never observe effects on proliferating cells that can be attributed to light exposed media. However, several light-related factors may exert sufficient collective influence to cause the spurious results occasionally...
Missing: stable linesGuideline
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