STAAR Review Questions 32 Toxoplasmosis is an infection producing brain lesions caused by the parasitic protozoan
Toxoplasma gondii. Mice with their gonads removed are more resistant to T. gondil and
develop very few lesions on their brain tissue. The graph shows the results of a scientific
study of normal adult mice infected with T. gondil.
Effects of T. gondil on
Brain Tissue in Mice
0.6
0.5
0.4
Mean Lesion Area
(% standard error)
wer:
0.3
0.2
0.1
0
Male
Female
Adult Mice
Which systems most likely interact and cause the severity of infections to vary?
F Muscular and skeletal
G Immune and endocrine
H Excretory and respiratory
) Nervous and integumentary