Example sentences for: stem

How can you use “stem” in a sentence? Here are some example sentences to help you improve your vocabulary:

  • As plants contain chloroplasts in leaf and stem cells and many autofluorescent compounds are localized in cell walls, a signal-to-background ratio for GFP detection is probably lower than in animal systems.

  • The isolation of intermediate multipotent stem cells (which can differentiate into a limited number of cell types) may also be valuable.

  • Treatment of L1210/CPA cells in vitro with 50 μM DEAB abolished the tumor cells' resistance to 4-HC [ 19 ] . DEAB also exhibited in vivo efficacy as a ALDH1A1 inhibitor, as demonstrated by the toxicity to the intestinal crypt cells in mice receiving co-injections of DEAB and cyclophosphamide [ 21 ] . More recently, DEAB has been used to demonstrate that overexpression of human ALDH1A1 in transfected cell lines is sufficient to cause cellular resistance to the oxazaphosphorines [ 22 ] and 4-HC [ 23 ] . DEAB has also been an effective reagent in fluorescent-activated cell sorting (FACS) techniques to isolate human hematopoietic stem cells based on the expression of ALDH1A1 activity [ 5 6 ] . In contrast to DEAB and DPAB, daidzin - a natural product isolated from Pueraria lobata (the Kudzu plant) - shows specificity for inhibiting ALDH2 at concentrations similar to that of DPAB used to inhibit ALDH1A1 [ 24 25 ] . An inhibitor specific for ALDH1A2 has not yet been reported.

  • The model has successfully identified a major gene with additive effects on second year stem growth in the hybrid aspens.

  • Research on some of the reported adult stem cell preparations may conceivably in the future demonstrate that they, too, like hematopoietic stem cells, can also be prospectively identified, “single cell cloned,” expanded considerably by growth in vitro with retention of normal chromosome structure and number, and preserved by freezing and storage at low temperatures.

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