Merck Manual

Please confirm that you are a health care professional

Yes No

Leave this Site?

The link you have selected will take you to a third-party website. We do not control or have responsibility for the content of any third-party site.

Continue Cancel
honeypot link
Merck Manual
Veterinary Manual
The trusted provider of veterinary information since 1955
VETERINARY PET
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z
Veterinary /
StandaloneMedia /
Gasterophilus third instars
gasterophilus-third-instars-horse-nielsen-high
Gasterophilus third instars

    Gasterophilus third instars attached to the gastric mucosa. This image is from a horse infected with both G intestinalis attached around the margo plicatus (left) and G nasalis attached in the pyloric region (right).

Courtesy of Dr. Martin K. Nielsen.

In these topics
<i>Gasterophilus </i>spp Infection in Horses

Merck and the Merck Veterinary Manual

Merck & Co., Inc., Kenilworth, NJ, USA is a global healthcare leader working to help the world be well. From developing new therapies that treat and prevent disease to helping people in need, we are committed to improving health and well-being around the world.  The Merck Veterinary Manual was first published in 1955 as a service to the community.  The legacy of this great resource continues as the Merck Veterinary Manual in the US and Canada and the MSD Manual outside of North America.

This icon serves as a link to download the eSSENTIAL Accessibility assistive technology app for individuals with physical disabilities. It is featured as part of our commitment to diversity and inclusion. M
View Privacy Shield Verification Status
View APEC CBPR Privacy Certification Status

This website is certified by Health On the Net Foundation. Click to verify. This site complies with the HONcode standard for trustworthy health information:
verify here.

 
© 2021 Merck Sharp & Dohme Corp., a subsidiary of Merck & Co., Inc., Kenilworth, NJ, USA