冻存试剂

Eukaryote Growth Dynamics

EukaryoteGrowthDynamics

LEVELII

Materials

  • SUSPensionculturessetupfromExercise12.8
  • SteriletransferPipettes
  • MaterialsforviABIlitycounting(Exercise12.7)

      Procedure

      1. After12hours,asepticallyremove0.1mlfromeachofthethreecultures,add0.1mloftrypanblueandcountthetotalnumberofcellsandthenumberofbluecells.Computethenumberofviablecells/ml.

      2. After24hours(fromthetimeofseeding),repeatstep1.

      3. Continuetorepeatstep1at24hourperiods(i.e.daily)untilthereisnochangeinthenumberofcells/mlofculture.

      4. Plotcellconcentrationonalogscalevstimeofculture.IdentifyandlabeltheLag,LogandPlateauphasesforyourculture.

      5. SelectaperiodoftimeduringtheLogPhaseandcomputethedoublingtimeforyourculture.Thatis,thetimerequiredduringtheLogPhasetoexactlydoublethenumberofcells/ml.
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