estrogen

"During puberty, teenagers experience many physical and emotional changes because their bodies are producing more hormones. "

"Hand me the level so I can tell if this is correctly installed."

"My sister is a female student in her senior year of high school. "

"He had something of his mother in him."

"The shy student secreted the note under his desk, hoping no one would see it. "

"The product is undergoing a change in order to improve it."

"The function of a school lunch is to provide students with nutrition. "

"Doctors sometimes prescribe steroids to reduce inflammation and help patients breathe more easily. "

"The male testicles are homologous to the female ovaries."

"If you still feel unwell tomorrow, see your doctor."

"How long has it been since your last physical?"

"The lightning caused thunder."