Regular Expressions 101

Pro

\ba Unicode word boundary

Group 1([A-Za-z]+\s*$[A-Z]+$|[A-Z]+)

1st Alternative[A-Za-z]+\s*$[A-Z]+$

Character Class[A-Za-z]+

+matches at least one character from the set below:

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

a-zone character from a (97₁₀) to z (122₁₀) (case sensitive)

\s*a Unicode whitespace character, repeated any number of times

\(the literal ( (40₁₀ / 50₈ / 28₁₆)

Character Class[A-Z]+

+matches at least one character from the set below:

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

\)the literal ) (41₁₀ / 51₈ / 29₁₆)

2nd Alternative[A-Z]+

Character Class[A-Z]+

+matches at least one character from the set below:

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

Group 2(\s*-\d+(?:,\s*-\d+)*)

\s*a Unicode whitespace character, repeated any number of times

-the literal - (45₁₀ / 55₈ / 2D₁₆)

\d+a Unicode decimal digit, repeated at least once

Non-Capturing Group(?:,\s*-\d+)*

*repeats the group contents below any number of times:

,the literal , (44₁₀ / 54₈ / 2C₁₆)

\s*a Unicode whitespace character, repeated any number of times

-the literal - (45₁₀ / 55₈ / 2D₁₆)

\d+a Unicode decimal digit, repeated at least once

Non-Capturing Group(?:,\s*and\s+(-\d+))?

?repeats the group contents below at most once:

,the literal , (44₁₀ / 54₈ / 2C₁₆)

\s*a Unicode whitespace character, repeated any number of times

andthe literal text and (case sensitive)

\s+a Unicode whitespace character, repeated at least once

Group 3(-\d+)

-the literal - (45₁₀ / 55₈ / 2D₁₆)

\d+a Unicode decimal digit, repeated at least once

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

Detailed match information will be displayed here automatically.

25 tokens

\b([A-Za-z]+\s*\([A-Z]+\)|[A-Z]+)(\s*-\d+(?:,\s*-\d+)*)(?:,\s*and\s+(-\d+))?

New

The acnes stimulated the mRNA expression of interleukin (IL)-1, -8, LL-37, MMP-1, -2, -3, -9, and -13 in keratinocytes.

The acnes stimulated the mRNA expression of interleukin (IL)-1, -8, LL-37, MMP-1, -2, -3, -9, and -13 in keratinocytes.