Top Posters
Since Sunday
36
18
s
13
13
12
g
6
N
6
o
6
6
h
5
l
5
i
5
SlideshowReport

Skin testing. Note the spot labeled H, which is the positive histamine control, and the spot labeled ...

Description
Skin testing. Note the spot labeled H, which is the positive histamine control, and the spot labeled S, which is the negative saline control. A definite allergic reaction is seen at the spot labeled 1. Note also the ruler under the patient's arm that is used for reporting the amount of the response. Different size spots are reported as 1+ to 4+.
Related Images
Explore
Post your homework questions and get free online help from our incredible volunteers
  225 People Browsing
 378 Signed Up Today
Your Opinion
Which of the following is the best resource to supplement your studies:
Votes: 163

Previous poll results: Who's your favorite biologist?