A 9-month-oId infant is seen by a physician because of a persistent skin infection. His white and red blood cell counts are normal. However, immunofixation electrophoresis indicates a low level of IgG. When the infant returns to the physician for a follow-up visit in a month, his IgG level has increased. What condition do these results indicate?

A. Severe combined immunodeficiency
B. Transient hypogammaglobulinemia
C. Common variable immunodeficiency
D. DiGeorge anomaly


Ans: B. Transient hypogammaglobulinemia

Biology & Microbiology

You might also like to view...

What is the difference between a genetically modified organism and a transgenic organism?

A. A transgenic organism contains only genes from other species, while a genetically modified organisms contains genes from its own species and genes from other species. B. A genetically modified organism is an organism that contains any foreign genes, while a transgenic organism has foreign genes that come from another species. C. A transgenic organism is an organism that contains foreign genes, while a genetically modified organism has foreign genes that come from another species. D. There is no difference between the two terms, they mean the same thing.

Biology & Microbiology

Gram-positive bacteria

a. have a thick cell wall, which retains crystal violet dye b. contain teichoic acids in their cell walls d. appear purple after Gram staining d. all of the above

Biology & Microbiology

The recent National Health and Nutrition Examination Survey found a 275% greater risk of what disease for individuals who consumed more than 25% of their daily calories from added sugars?

A) diabetes B) cardiovascular disease C) stomach cancer D) hypertension

Biology & Microbiology

The honey possum (Tarsipes rostratus) is a tiny Australian marsupial that feeds entirely on nectar. Which of the following terms describes the role of a honey possum in its ecosystem?

A. primary carnivore B. herbivore C. detritivore D. primary producer E. secondary carnivore

Biology & Microbiology