Patient X has a cancer that his physician has staged as T1, N1, M0 . Which of the following is TRUE about this patient's cancer?
a. There is no evidence of a primary tumor.
b. The tumor involves no infiltration of lymph nodes.
c. The tumor has distant metastases.
d. The tumor involves nearby lymph node infiltration.
Question 2
_______________ vaccines are live mutants that have lost their pathogenicity while retaining immunogenicity, and provide more natural protection.
Fill in the blank(s) with correct word