What is essential fat?

What is the term for bone marrow tumor? osteoma myeloma osteocele osteomyoma

Which of these is likely to be the best source of valid health information?

What link in the chain of transmission is described in the paragraph? sarah has been eating and sleeping poorly. she was just diagnosed with pneumonia. tests showed the illness was caused by streptococcus pneumoniae. in the chain of transmission, sarah is the (blank) , and streptococcus pneumonia is the (blank).