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Five operators to serve you
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846-0629
Open Mon.-Fri. 8-5
Located in the basement of the Memorial Student Center
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when an accident or
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CarePlus is open when you
need them 7 days a week
with affordable medical care.
Family Medical Center ^ ^ ^ 0 0
2411 Texas Ave. and 0^7v>""UOOC5
Southwest Pkwy. 10 o/ 0 Discount with A&M ID
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Grants for Graduate Research Abroad for U.S. Citizens
♦APPLY NOW*
Informational Meetings
From 2:00 - 3:00 PM in 251 Bizzcll Hall West
ATTEND ONE OF THESE DATES:
7/30 8/6 9/3 9/9
Study Abroad Programs 161 Bizzell Hall West 845-0544
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RESEARCH
Depression Study
Are you currently taking Prozac'*’ to treat your depression?
VIP Research is recruiting individuals who are currently taking Prozac 1 * to
participate in a research study of an investigational anti-depressant
medication. Participants who qualify and complete the study will he paid
$120.
Genital Herpes Study
Individual with genital herpes infection are being recruited for a research
study of an investigational anti-viral medication. If you would like to find
out more about this study, call VIP Research. $500 will be paid to
qualified volunteers who enroll and complete this study.
Generalized Anxiety Disorder Study
Individuals are being recruited for a research study on Generalized
Anxiety Disorder. If you experience anxiety or would like to find out more
about this study, call VIP Research. $200 will be paid to qualified
volunteers who enroll and complete this study.
Arthritis
VIP Research is seeking individuals with osteoarthritis for a three month
study on investigational anti-inflammatory medication. If you have been
diagnosed with osteoarthritis or would like more information, call VIP
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CALL
Volunteers in Pharmaceutical Research, Inc.
776-1417
Two Hours
of Great Comedy
Just ForYou!
Tonight
I
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expires 7-23-92j
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Show starts at 9:00 p.m.
92* DRINKS
1503 S. Texas * Culpepper Plaza * 693-1736
The Battalion
E
mmd
cience
Thursday, July 30,1992
Page
Pecan growers fight pests with technology
Farmers test natural insecticide
By Ursula Simms
The Battalion
The Texas Pecan Growers As
sociation received a $25,000 grant
from the Texas Department of
Agriculture to study the effective
ness of computer maps and Bacil
lus thuringiensis (BT), a naturally-
occurring insecticide, to control
the pecan nut casebearer from de
stroying pecan trees across Texas.
The pecan nut casebearer is a
major nut-feeding insect that can
cause significant damage to pecan
trees. The insect, which is the lar
va of a moth, is deposited on the
pecan nutlet until maturation at
which time the insect burrows
into the nutlet, which serves as its
source of food.
The state of Texas has about
one million acres of native pecan
trees. Nearly 250,000 of these acres
have undergone treatment to con
trol the casebearer.
"We always encourage produc
ers to scout orchards for pecan nut
casebearer activity to determine if
they need to treat or not," said Bill
Ree, an extension entomologist.
Casebearer activity is noted by
eggs laid on
the nutlets and
the appearance
of a webbed
like material
which occurs
as the insect
burrows into
the nutlet.
In 1988, the
most effective
insecticide for
controlling the
pecan nut case
bearer was lost
due to product
registration
problems, Ree
said. As a re
sult, research
has shown that
Bacillus
thuringiensis,
particularly the
BT product
Javelin, is effec
tive in control
ling the case-
DARRIN HILL/The Battalion
Marvin Harris sorts through
plastic cups containing pecans
that are the food supply for the
larva of the
casebearer moth.
pecan nut
ring insecticide
because it was
originally ex
tracted from in
sects found in
the wild. The
bacteria is now
produced
chemically.
"It is so se
lective, if other
insects were to
eat it, it would
not affect
them," said
Ree. "When the
larva ingests
the bacteria on
the foliage it
causes them to
get sick and
die."
Furthermore,
Ree said that
commercial
sizes of Javelin
are available for
homeowners in
search for the use of compuif
maps to track the occurrence;
the pecan nut casebearer.
The computer maps will be
"tool for producers to use tot
termine if they need to treate
not," Ree said.
The old computer map m
were not as effective since
only used cities and dates to pie
diet casebearer activity.
The new model will beam!
of Texas which predicts theactir
ty of the pecan nut casebean;
based on degree-days, sincetln
casebearer develops according
temperature, said Ree.
Jackman said the computs
map is constructed throughtli
Geographical Informational Se
vices which produces a map wit
county lines running across it.
"Last year we took the
over to the department of foresir
and they made a trial run
looked like it would be a success
said Jackman.
bearer without harming other in
sects.
Dr. John Jackman, extension
specialist, said Bacillus
thuringiensis is a naturally-occur-
Agricultural Cooperation offices.
"It is a very safe product for
homeowners in an urban environ
ment," said Ree.
The grant will also fund re-
"We want to take the predicte
information site-by-site and put
into a map form and make
available for the producers," Jad
man said.
Tuberculosis resurges in age of AIDS
A&M medical professor researches disease in search for improved vaccine
NICK PENA /The Battalion
Dr. David McMurray explains how to use an aerosol infection chamber to infect guinea pigs for TB
research.
By Robin Roach
The Battalion
Six years ago, medical profes
sionals likely would have pre
dicted that the number of cases
of tuberculosis would drastically
diminish in today's day and age.
Just the opposite has happened.
The onset of AIDS has caused
the reoccurrence of TB to prevail
throughout the world.
"We thought tuberculosis was
going away and it's not; it's
back," said Dr. David McMurray,
professor of medical microbiolo
gy at Texas A&M College of
Medicine. "The reason why it's
back is because HIV-infected in
dividuals are very susceptible to
tuberculosis, and tuberculosis is
the only infection AIDS people
get that can be transmitted easily
to normal individuals."
Tuberculosis is so common in
HIV-infected individuals that the
presence of the disease is often
the initial signal that alerts one to
believe he or she is HIV positive.
McMurray, in collaboration
with other laboratories across the
country and worldwide, is re
searching TB to find a vaccine
that will be 100 percent effective.
There is a vaccine, Bacille Cal-
nette Guerin (BCG), used in 120
countries, but for ethical and
health policy reasons it is not
used in the United States.
"The question now is, do we
need to develop a new vaccine or
do we need to reconsider the use
of BCG in certain high risk popu
lations," McMurray said. "For
example, contacts of AIDS pa
tients, health care personnel,
prison personnel, people who
work in shelters for the homeless
— because that's where the tu
berculosis is and that's where
normal individuals come in con
tact with people who have TB."
McMurray and other re
searchers are conducting the re
search in order to develop an im
proved vaccine.
"The research is trying to un
derstand the immune response
against tuberculosis so that we
can develop a better vaccine,"
McMurray said. "It really doesn't
have to do with HIV, except in a
peripheral way."
With the use of the facilities at
the Texas A&M College of Medi
cine, McMurray is working to
test the experimental vaccines
that other laboratories across the
country have developed. To test
the candidates for possible vac
cines, guinea pigs are infected
with tuberculosis so researchers
can observe the effects of each
vaccine after it is given to a hu
man model.
"We need a species that is as
susceptible to TB as humans are
and it turns out the guinea pig
that animal," McMurray said
"The model attempts to mimic
the human situation."
TB is easily transmittable
through the air. It can be con'
tracted by breathing the air after
an individual infected with tu
berculosis coughs.
An estimated one third of the
world's population is infected
with tuberculosis, and 10 million
new cases develop each year.
In healthy individuals, drug
therapy can cure TB, yet the diS'
ease continues to kill three mil
lion people a year worldwide
There are some types of the tu
berculosis bacteria organism
are resistant to the drugs used to
treat the disease.
"We've got the appearance of
drug-resistant isolates that can'
be treated effectively with the ex
isting antibiotics," McMurray
said. "We have the potential for
a very large-scale epidemic."
McMurray has been research
ing TB for 20 years, 16 at A&M.
He based his research for his
doctorate, which he earned at the
University of Wisconsin, on med
ical microbiology on tuberculo
sis.
"TB is a disease that too many
people have just sort of forgotten
about and the more that we get
the word out of the increased
risk, everyone will have a better
understanding of the disease,"
McMurray said.
Vol. 91 Mo -
Orp
eva<
Sari
SARAJEVC
ina (AP) — A
carrying do2
ohans raced
Sunday on th
escape that h
two young liv<
Left behin
other childrei
tion as Bosr
punch throug
cling the city
claimed some
ties.
Many of tl
and struggle
were put on t
em suburb of
so-called "Sni
from central S
One blond
burly soldier
his arm to the
tie boy happi
bar and climbi
The bus tra
torn territor
Croatian port
cials from a <
waited with a
take them to C
The childr
night in a -"se
ca, about 25
Sarajevo, sai
Cromme, spoi
ony-Anhalt !
Magdeburg, C
On Satur<
■were killecl w
by heavy fire.
"I heard th
the bullet - wb
the gunshot,
Zeljko Grgic. ‘
throw mysel
then I remem
in the back ai
the last 200 tc
ty."
It was not
who fired on 1
was caught
goslavia's pr<
condemned t
Bosnian . . .
ists," Panic si
Bulgaria on Si
Bosnia's St
Karadzic, de
tacked the bi
properly mai
was firing fr
that Serbian
attack it," he;
Bosnia is
creasingly de
ethnic Serb 1
capital. An o
mostly Mu
forces has coi
west Sarajevo
expanded Sui
Bosnian
pushed back
it was unclea
were broken,
to sever Ser
connect with
side the city.
DOUGLAS JEWELERS
Texas A&M
University Watch
by SEIKO
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pocket watch $245.00
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Riv
KALAR,
deadliest so f,
ber of clashe:
Kurdish grov
fight over a tc
After a tw
nearly a score
two forces va
sualty counts
remained at
tween fund
Kurds and
groups bent
ny in northei
U.I
1HE
696-9099
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Remember:
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The Battalion
JOHANN
tional strike
government;
black groups
tors trying to
The Africa
called the tw
chronic town
cal talks.
But the st
tiled for the i
ing Presidenl
concessions c
The plann
visions amc
throughout tl
An ANC
some of the
We killed p