Determine the blood group of the patient sample from the images of agglutination provided.

Identify the following agglutination reactions with a suitable example.

A) 

B) 

C) 

D)  

In clonal selection of B cells, which substance is responsible for determining which cells will eventually become cloned?

Primary immunodeficiency producing susceptibility to infection by viruses and molds is due to:

Antigen Antibody Reactions in which the visible clumping of bacteria, cells, or particles, by an antigen combining with its specific antibody occurs are referred to as

A previously healthy 58-year-old female presents

for a routine health examination. Findings are

significant for slight exophthalmos (protrusion of

the eyeball) and atrial fibrillation (abnormal heart

rhythm). Laboratory studies indicate abnormal

thyroid function. The autoimmune disease most

likely to be responsible for the findings in this

patient is

A 6-year-old male receives a bone marrow transplant

from his father during treatment for acute myelogenous

leukemia. Of primary concern will be the potential

development of 

An 8-month-old female patient is evaluated Correct answer C.

for recurrent bacterial infections. Examination,

reveals albinism of the eyes and skin. Testing reveals decreased NK and T-cell functions and

further evaluation reveals impaired fusion of

lysosomes with phagosomes. The disorder most

likely to be responsible for the findings in this

patient is

A24-day-old term infant was brought to the clinic because he developed seizure and was not thriving. A chest x-ray and

echocardiogram revealed an enlarged heart and truncus arteriosus with a

large ventricular septal defect. Examination also revealed showed low-set

ears and thymic hypoplasia.