Arrange the steps of biopsy and histopathology of tissue involved in detection of cancer.
(A) A thin section of tissue is stained
(B) Freezing of tissue in liquid nitrogen
(C) A piece of the suspected tissue cut into thin sections
(D) Examination under microscope
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → (B), (C), (A), (D)
(B) Freezing of tissue in liquid nitrogen — first. The suspected tissue removed in a biopsy is frozen to make it firm, so that very thin slices can be cut.
(C) A piece of the suspected tissue cut into thin sections — second. The firm tissue is cut into thin sections.
(A) A thin section of tissue is stained — third. Staining colours the cells so that their structure can be seen.
(D) Examination under microscope — last. A pathologist examines the stained section for cancerous cells (histopathology).
Note: The step of freezing the tissue in liquid nitrogen is from beyond the NCERT textbook.
NCERT Extract:
Cancer – …
