A premature infant is born at 28 weeks gestation and soon after birth, begins to exhibit signs of respiratory distress, including rapid breathing, grunting, and cyanosis. Which of the following is the most likely cause of this infant's condition?

A 36-year-old woman had undergone elective breast enhancement, with the insertion of 250-ml saline bags bilaterally. This resulted, unfortunately, in loss of sensation bilaterally in the nipples and areola. What specific single nerve most likely subject to iatrogenic injury?

Following the diagnosis of breast cancer, a 42-year-old woman underwent a total mastectomy, including excision of the axillary tail. Postoperatively, the patient complains of inability to feel sensation in the inner aspect of the arm and axilla. Which nerve was most likely injured during this procedure?

A 40 years old doctor has an ulcer on his right check after a mission in Yemen. A skin scrap from the edge of the ulcer can detect the promastigote form of Leishmania, what is the most likely method used to reveal it?

A 36 housewife has severe burn while she was cooking. She is admitted to hospital, few days later, the burned area starts oozing Greenish-pus. The physician suspects Gram-ve bacterial infection and starts antibiotic therapy immediately to avoid the development of shock. Which bacterial structure plays the most significant role in the pathogenesis of shock in this condition?

A 7-year-old boy attends clinic with a two-week history of fever, sore throat and lumps in his neck. Clinical examination reveals enlarged lymph nodes in his neck and the physician makes a diagnosis of reactive lymphadenopathy. Which structure within the lymph node is responsible for its enlargement?

A 3-year-old child has fever, and skin rash. The pediatrician suspects viral infection. Which part of the virus is mostly involved in attachment to host cell?

Following a bacteriology lecture, a first year medical Students tries to recall the function of the different bacterial structures. What bacterial structure protects the organisms against phagocytosis?

In a pathology laboratory; the students are asked to point to the T-cell zone in the spleen. Which is the most likely area in this organ showing T- cell predominance?

A 7-year-old boy has fever and skin rash. The pediatrician suspects chickenpox. When will he stop being contagious?