The wart is frozen until it and 1 to 2 mm of surrounding skin have turned white (Figure 15) . A repeat freeze after thawing causes more effective tissue destruction than a single freeze. The affected tissue turns red or blisters over the next one to two days, then gradually sloughs off over the following weeks.
Hermana is in Spanish. It is the Spanish word for sister..
Hemichordates are a group of organisms that show an affinity to the chordates, but are lacking some key characteristics of chordates. They include two groups.  Enteropneusta (acorn worms). These are 2 cm to 1.5 m long; marine in shallow waters, solitary, live in mud or vegetation; filter-feeders.