Which of the following can trigger acute respiratory distress?

A. Cardiac myocytes (heart muscle cells) are less likely to undergo neoplastic transformation compared to other cell types. These cells have a very limited ability to proliferate and typically do not undergo the rapid cell division that is characteristic of cancerous growth.

B. Hepatocytes (liver cells) are capable of undergoing neoplastic transformation and can give rise to liver cancer (hepatocellular carcinoma) under certain conditions, such as chronic liver disease or cirrhosis.

C. Epithelial cells, which line body surfaces and cavities, are among the most common cell types to undergo neoplastic transformation. Various cancers, such as skin cancer, lung cancer, and colorectal cancer, arise from epithelial cells.

D. Lymphocytes (a type of white blood cell) can develop into neoplasms, such as lymphomas or leukemias, when they undergo malignant transformation.

A. Meconium ileus is a common early sign of cystic fibrosis in newborns. It occurs when the meconium, which is the first stool of a newborn, becomes thick and sticky, leading to a blockage in the intestines. This is often one of the first signs of cystic fibrosis in infants.

B. Cyanosis, while indicative of oxygenation problems, is not a specific sign of cystic fibrosis in newborns. It may be seen in many respiratory or cardiac conditions.

C. Yellow, seedy, loose stools are more commonly associated with normal newborn digestion or conditions like lactose intolerance or gastrointestinal infections, not specifically cystic fibrosis.

D. Coughing is a symptom of cystic fibrosis, but it typically develops later as the disease progresses and affects the lungs, rather than being an early sign in newborns.