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<em>Toxoplasma gondii</em> (Nicolle and Manceaux) Nicolle and Manceaux
<em>Toxoplasma gondii</em> (Nicolle and Manceaux) Nicolle and Manceaux
規格:
貨期:
編號:B228644
品牌:Mingzhoubio

標準菌株
定量菌液
DNA
RNA

規格:
凍干粉
斜面
甘油
平板


產品名稱 Toxoplasma gondii (Nicolle and Manceaux) Nicolle and Manceaux
商品貨號 B228644
Deposited As Toxoplasma gondii (Nicolle and Manceaux) Nicolle and Manceaux
Strain Designations 0761
Application
Food and waterborne pathogen research
Opportunistic pathogen research
Biosafety Level 2

Biosafety classification is based on U.S. Public Health Service Guidelines, it is the responsibility of the customer to ensure that their facilities comply with biosafety regulations for their own country.

Isolation Southern sea otter, Enhydra lutris nereis, with encephalitis, California
Product Format frozen
Storage Conditions Frozen Cultures:
-70°C for 1 week; liquid N2 vapor for long term storage

Freeze-dried Cultures:
2-8°C

Live Cultures:
See Protocols section for handling information
Type Strain no
Genotype Haplogroup 2
Growth Conditions
Temperature: 35°C to 37°C
Cell Line: ATCC® CRL-1634™ (human foreskin fibroblasts)
Cryopreservation Harvest and Preservation
  1. To harvest the Toxoplasma culture, detach any remaining tissue culture cells (infected and uninfected) by scraping the surface of the flask with a cell scraper.
  2. Transfer the cell suspension (including parasites) to 15 mL plastic centrifuge tubes. Centrifuge at 1300 x g for 10 min.
  3. Remove all but 0.5 mL of the supernatant from each tube, resuspend the cell pellets, and pool them to a single tube.
  4. Pass the resulting cell suspension through a syringe equipped with a 27 gauge 1/2 in needle to break up any remaining cells. Adjust the parasite concentration to 2.0 - 4.0 x 107 cells/mL with fresh medium or PBS. NOTE: If the concentration of parasites is too low, centrifuge at 1300 x g for 10 min and resuspend in the volume of fresh medium or PBS required to yield the desired concentration.
  5. Prepare a cryoprotective solution containing 15% (v/v) DMSO and 50% (v/v) HIFBS in fresh medium or PBS.
  6. Mix the cell preparation and cryoprotective solution in equal portions. The final concentration will be 1.0 - 2.0 x 107 cells/mL, 7.5% DMSO, and 25% HIFBS. The time from the mixing of the cell preparation and cryoprotective solution to the start of the freezing process should be no less than 15 min. and no more than 30 min. NOTE: To prevent culture contamination, penicillin-streptomycin solution (ATCC® 30-2300) may be added to a final concentration of 50 to 100 I.U./mL penicillin and 50 to 100 µg/mL streptomycin.
  7. Dispense in 0.5 mL aliquots to 1.0-2.0 mL sterile plastic screw-capped cryules (special plastic vials for cryopreservation).
  8. Place vials in a controlled rate freezing unit. From room temperature cool at -1°C/min to -40°C. If freezing unit can compensate for the heat of fusion, maintain rate at -1°C/min through heat of fusion. At -40°C plunge ampules into liquid nitrogen. Alternatively, place the vials in a Nalgene 1°C freezing apparatus. Place the apparatus at -80°C for 1.5 to 2 hours and then plunge ampules into liquid nitrogen. (The cooling rate in this apparatus is approximately -1°C/min.)
  9. Store frozen ampules in either the vapor or liquid phase of a nitrogen refrigerator.
  10. To thaw a frozen ampule, place it in a 35°C water bath such that the lip of the ampule remains above the water line. Thawing time is approximately 2 to 3 minutes.  Do not agitate the ampule.  Do not leave ampule in water bath after thawed.
  11. Immediately after thawing, aseptically transfer contents to a T-25 tissue culture flask containing a fresh monolayer of ATCC® CRL-1634™ cells and 10 mL ATCC® 30-2002 with 3% (v/v) HIFBS.
  12. Outgas the flask for 10 seconds with a 95% air, 5% CO2 gas mixture.
  13. Incubate in a 35-37°C CO2 incubator with the cap screwed on tightly.
Name of Depositor LD Sibley
Special Collection NCRR Contract
Chain of Custody
ATCC <-- LD Sibley <-- R. Cole
References

Cole RA, et al. Biological and molecular characterizations of Toxoplasma gondii strains obtained from southern sea otters (Enhydra lutris nereis). J. Parasitol. 86: 526-530, 2000. PubMed: 10864250

L D Sibley, personal communication

梅經理 17280875617 1438578920
胡經理 13345964880 2438244627
周經理 17757487661 1296385441
于經理 18067160830 2088210172
沈經理 19548299266 2662369050
李經理 13626845108 972239479
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