While plants lack an immune system in the sense that it exists in animals, they do possess mechanisms that are comparable in that they recognize potential pathogens and stress vectors and then initiate defence responses
These molecules play a crucial role in regulating several biological functions, from hormone production and immune response to cognitive function and cellular repair
Zimmermann KS, Richardson R, Baker KD (2019) Maturational changes in prefrontal and amygdala circuits in adolescence: implications for understanding fear inhibition during a vulnerable period of development
Cases of androgen insensitivity can be classified as complete, partial, or mild, and diagnoses are made by observation of female external genitalia in a XY karyotype male fetus (ie., complete androgen insensitivity), gynecomastia and atypical genitalia at puberty (ie., partial androgen insensitivity), or unaffected genitalia yet presence of male infertility (ie., mild androgen insensitivity)
Some users tolerate lower concentrations here than on other facial areas