Bacteriology lab report

First outbreak[ edit ] The field in which the infected cattle were grazing immediately before testing positive for foot-and-mouth disease. Symptoms were first reported late on 2 August on farmland in Normandy in Surreywhich was subsequently isolated and placed under restrictions.

Bacteriology lab report

Lactococcus lactis Include sketches, photos, or descriptions of samples you viewed in the lab. You will need to research this.

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Eubacteria are placed in a division depending on the type of cell wall they have. Bacteria with a thin peptidoglycan layer are classified as gram - Bacteriology lab report will stain pink.

Gram stains can be difficult and take practice. Follow the steps exactly as listed.

Bacteriology lab report

If known samples are not available, you can gram stain a sample from your petri dish, but there will be no way to check your accuracy. Use a sterilized innoculating loop to transfer a small droplet of water to a clean slide.

Add a sample of a known culture to the droplet and pass it briefly over flame to heat fix the sample. Add drops of crystal violet over the fixed culture.

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Let stand for one minute. Pour off excess stain and gently rinse the slide in tap water. Keep in mind, the objective is to wash off the stain, not the fixed culture. Add about drops of iodine to the smear. Pour off excess iodine and rinse the slide with water as before.

Tip the slide and add several drops of the ethyl alcohol to the upper end. Allow alcohol to flow over the smear. After several seconds, rinse the slide again. Add about 5 drops of the safranin to the slide.


Rinse the slide again, drain and blot away excess moisture. Let the slide dry. If your gram stain was not successful, use google to research your sample and find out what it is. Your job is to demonstrate that you have achieved these goals. You are free to use whatever means you think will show me that you have engaged and learned something in this lab.Find and compare Medical Lab software.

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This web page lists the test request, container, supply, and order forms available from the TDSHS Lab, and contains a link to the TDSHS Fee Schedule.

Texas Department of State Health Services, Lab Forms and Fee Schedule

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