Busy. Please wait.

show password
Forgot Password?

Don't have an account?  Sign up 

Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.
We do not share your email address with others. It is only used to allow you to reset your password. For details read our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
Didn't know it?
click below
Knew it?
click below
Don't know
Remaining cards (0)
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

Bovine Leukemia


What is another name for this disease? Enzootic bovine leukosis
This is a malignang neoplasm of what? Reticuloendothelial system of cattle
Dairy cattle infected vs. Beef cattle infected 10-50% vs. 1-20%
T/F. Free virus is often found in the blood. FALSE. It is rarely or never found in the blood. It is associated with B lymphocytes and is a v onc-
How is this disease transmitted? require close, prolonged contact. Primarily by the transfer of blood lymphocytes between animals. These lymphocytes are found in the blood, milk, and in tumor masses. Extremely small amounts are capable of transmitting the disease.
Is there biological transmission? NO
Vertical transmission accounts for a a very small proportion of infections (<10%). How does it occur? in utero or through colostrum and milk contining infected lymphocytes
What are the major target cells of this virus? B LYMPHOCYTES
There are 4 possible outcomes of the infection: (1)Failure of animal to be infected due to genetic resistance. (2)Asymptomatic infection and antibody response.(3)Persistent lymphocytosis with a benign proliferation of B lymphocytes. (4)Lymphosarcoma
How is an animal genetically resistant to persistant lymphocytosis? Has to do with the class II genes of the bovine major histocompatibility complex (BoLA). Cattle with the BoLA-Aw 7 are resistant and ones with the BoLA-Aw 12 are susceptible
How long do cattle who develop asymptomatic infections have before they are seropositive? 4-12 weeks after exposure
What percentage of animals develop the 3rd infectious possibility? ~33% of infected animals
What is the percentage of infected showing lymphosarcoma and what is the age group? 1-2% and they are between 4-8 years of age; 100% mortality
What are 3 common clinical signs observed? wieght loss, anorexia, and decreased milk production
What specific serological test can be used to detect this virus? Agar gel immunodiffusion test (AGID)
WHat does AGID test for? antibodies against the virus envelope glycoprotein gp51 and the major core protein p24
What age can you serologically test the cattle for the virus? over 6 months of age because you want to give time for the maternal antibodies to disappear
Created by: lkollmeier



Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!

"Know" box contains:
Time elapsed:
restart all cards