An user Spanish
says…

Al
  obtener
Verb
  las
Determiner
  muestras
Noun
  para
Adposition
  la
Determiner
  biopsia
Noun
  renal
Adjective
  se
Pronoun
  pueden
Auxiliary
  cometer
Verb
  errores
Noun
.

Mistakes can be made when obtaining samples for kidney biopsy.
Words and sentences
New
al

Contraction of a el (“at the, to the”).

New
obtener

to obtain

New
las

New
muestras

New
la

New
biopsia

New
cometer

  1. to commit
  2. to make (an error, etc)

New
errores

plural of error

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