Toxins from bacteria or a by-product of degenerating tissues

A) mensuration
B) calibrating
C) body mass index (BMI)
D) vital signs
E) pyrogens
F) subnormal
G) scanning
H) palpating
I) auscultating
J) apex

Pyrogens are substances, typically produced by bacteria, that can cause fever when released into the body. They are not necessarily the toxins themselves but can be a by-product of bacterial presence or tissue breakdown, leading to an immune response that includes fever.