His heart seems to have frozen.

Cell biology is the study of the structure and function of cells, which are the basic units of life.

Functional analysis is a branch of mathematics that studies the properties of functions in infinite-dimensional spaces.

Neuroanatomy is an important field of study for understanding the structure and function of the brain.

Demography is an important tool for understanding various aspects of society.

I studied linear algebra at university.

I used an optical microscope for an experiment at school.

I am majoring in auditory phonetics at university.

Acoustic phonetics is the study of the physical properties of speech.

Articulatory phonetics is a study about the production of speech sounds.