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Date November 2020 Marks available 1 Reference code 20N.1.SL.TZ0.27
Level Standard level Paper Paper 1 Time zone TZ0 / no time zone
Command term Question number 27 Adapted from N/A

Question

The graph shows the results of measuring two factors in the blood of patients with HIV/AIDS.

[Source: Courtesy ACRIA.]

 

What do X and Y represent?

Markscheme

A

Examiners report

[N/A]

Syllabus sections

Core » Topic 6: Human physiology » 6.3 Defence against infectious disease
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