Long-term use of these drugs may produce biochemical abnormalities in the area of the brain known as the striatum.

Some of these cells undergo another genetic change that produces visible abnormalities and allows them to grow uncontrollably in the progression stage.

While essential for human life, oxygen also produces cellular abnormalities and other problems.

Comparatively, stenoses of about 75% are required to produce detectable abnormalities during cardiac stress tests.

Non-homologous recombination can be damaging to cells, as it can produce chromosomal translocations and genetic abnormalities.

Exposure to a single agent can produce various abnormalities depending on the stage of development it occurs.

These encysted life stages produce developmental abnormalities in post-metamorphic frogs, including additional or missing limbs.

Beginning in 1967, studies raised concerns that LSD might produce genetic damage or developmental abnormalities in fetuses.

A study published in 1973 by Cousins and Mazze demonstrated that compared with halothane, methoxyflurane produces dose-dependent and deleterious abnormalities in renal function.

Doses greater than 1 Gy may produce congenital abnormalities.