Five One- and Two-Base Repeat Loci Were Tested for Instability

question 29

Multiple Choice

Five one- and two-base repeat loci were tested for instability, comparing cancer tissue to reference normal tissue from the same patient. Three of the five loci showed additional alleles in the cancer cells compared to the normal cells. How is this interpreted?

• A) High instability (MSI-H)
• B) Low instability (MSI-L)
• C) Stability (MSS)
• D) This result is not informative.

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