A mother brought her 6 month-old male infant to your office for the establishment of care. She reports that he had four bouts of pneumonia and ‘countless’ skin infections in the last six months of his life. His past medical history is significant for delayed separation of his umbilicus after birth. You did not find any abnormalities in your physical examination. Her report of ‘countless’ skin infections prompted you to investigate further.You ordered some routine labs which is significant for a WBC count 30000/microliter. You suspect leukocyte adhesion deficiency in this baby. Of the following, which is the pathological hallmark of leukocyte adhesion deficiency?
