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2 years ago

Chimeric mice are generated where approximately 50% of the cells in the animal are genetically MHC class I-deficient.

1 answer:

8 0

Chimeric mice are generated where approximately 50% of the cells in the animal are genetically MHC class I-deficient. The other 50% are deficient for the herpes virus receptor, HVEM, but do express MHC class I molecules. When these mice are infected with herpesvirus by intraperitoneal injection, a robust virus-specific CD8 T cell response is detected at day 7 post-infection in the spleens of the infected mice.

Chimeric mice are generated where approximately 50% of the cells in the animal are genetically MHC class I-deficient - Immunobiology

: a branch of biology concerned with the physiological reactions characteristic of the immune state

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Which one of the following statements accurately describes a characteristic of red blood cells?

wel

A)no, they do, they do have hemoglobin! what they do lack is a nucleus (so answer B is also false)

c) - no, inflammation would be more a response of immune cells (not red blood cells) to a foreign body or organism

d) -yes, this is the correct one!

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3 years ago

1. Where is the CFTR protein found?

maks197457 [2]

Answer:

CFTR protein is found in the cells lining the lungs

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3 years ago

Which structural characteristic is found in both plant and animal cells?

defon

The best answer is A.

Mitochondria are small organelles found floating free in the cytoplasm of both animal and plant cells. They consist of two membranes, an outer and inner membrane which has numerous folds creating layered structures called cristae.Inside the mitochondria, there is found fluid called the matrix

Mitochondria are the powerhouse of cells. Many of the reactions in cellular respiration that take place in the cell occur in mitochondria and thus these organelles are key in the production of energy .

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3 years ago

David is developing a model of mitosis. He plans to represent a cell with a paper circle, and to represent 6 chromosomes with co

Paraphin [41]

The most useful representation of metaphase would be 6 toothpicks at one end of the circle, and 6 toothpicks at the opposite end of the circle.

<h3> What are cytokinesis and mitosis?</h3>

Mitosis is a cell division type that divides the parent cell and the genetic material into two alike daughter cells with the same chromosome numbers.

Cytokinesis is a process by which at the end of the telophase the cytoplasm of the cell starts dividing and results in the formation of the plate in plants and furrows in the animal, dividing the cell equally.

Thus, option "B" is correct.

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7 0

2 years ago

From which of the following does the right atrium receive blood?

olga2289 [7]

The right atrium receives blood returning from others parts of the body through the superior vena cava and the inferior vena cava.

Explanation:

The pathway of circulation begins in the right atrium which receives the carbon dioxide-rich deoxygenated blood returning through the systemic circulation.

The deoxygenated blood from regions superior to the heart, i.e., the head, neck, shoulder areas are collected through the superior vena cava and that from the parts inferior or lower to the heart like visceral organs, extremities, trunk, hip etc are brought through the inferior vena cava.

Both these venous systems (superior and inferior) fill the right atrium.

The right atrium then pumps the deoxygenated blood to the right ventricle via the tricuspid valve.

The right atrium is filled with blood during diastole.

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4 years ago