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Biomedical subjects

B S Gill

Publications and source records attributed to B S Gill.

At least 91 records · Page 5Linked to original sources
PubMed1984

Somatic chromosome counts from leaf meristems in the tribe Triticeae.

The Feulgen procedure was applied to chromosome preparations of leaf meristems from growing plants of wheat, barley, and wheat-wheatgrass hybrids. Leaf primordia from the base of secondary tillers were pretreated in cold water (overnight, 2 C), fixed in glacial acetic acid (20 min, 2 C), hydrolyzed in 1 N HC1 (14 min), stained in leuco-basic fuchsin (about 15 min) and squashed in 1% acetocarmine. The chromosome spreads from leaf meristems were generally superior to those of the root meristems of the same plant. Mitotic index in leaf meristems was higher than in root meristems in some species. The method appears useful for counting the chromosome number of growing plants, detecting chimeras, and verifying root tip chromosome counts.

Chromosomes↗
PubMed1984

Chemotherapy of bovine tropical theileriosis: Theileria annulata infection.

Seven groups of calves were treated with parvaquone (993C: Clexon, Wellcome) (20 mg kg-1 intramuscularly) or halofuginone lactate (1.2 mg kg-1 orally) on the first, third or sixth day of significant pyrexia following artificial infection with the Hissar strain of Theileria annulata. Eight untreated control animals developed severe theileriosis and five died. All animals treated with parvaquone or halofuginone lactate on the first or third day of fever underwent relatively mild theileriosis and all of them recovered. One of five animals treated with parvaquone and three of six treated with halofuginone on the sixth day of fever died of theileriosis.

Administration, Oral↗
PubMed1982

Branched Mycobacterium-like organisms from swine lymph nodes.

Branched, weakly acid fast organisms were isolated from 5 of 112 caseous lymph nodes derived from slaughter-house pigs. In two cases they were associated with typical Mycobacterium avium strains. The bacteria differed from all other mycobacteria known at present. Limited experiments in pigs with one strain failed to disclose a possible pathogenic role in the host species although this strain was pathogenic for mice. Tests with this and three other strains showed that all four were apathogenic for chickens.

Abattoirs↗
PubMed1980

Immunological relationship between strains of Theileria annulata Dschunkowsky and Luhs 1904.

The immunological relationship between the Ludhiana and Hissar strains, and between the Uruli-Kanchan, Bangalore and Jaipur strains of Theileria annulata was studied. Calves were immunised against the Ludhiana strain by the infection-treatment method, against the Uruli-Kanchan strain by the infection-treatment method or by untreated low-grade infection and against the Jaipur strain by untreated low-grade infection. After 45 days, groups of immune calves and susceptible controls were challenged with 10-tick equivalent stabilates. The ensuing host responses, body temperature, swelling of the regional lymph node, appearance of schizonts in the regional lymph node and piroplasms in blood and mortality, were studied. All five strains proved very virulent and produced severe disease in susceptible calves. Immunisation with the Ludhiana, Uruli-Kanchan and Jaipur strains conferred absolute protection against severe homologous challenges. Immunisation with the Ludhiana and Uruli-Kanchan strains conferred substantial protection against heterologous challenges with the Hissar strain, and the Bangalore and Jaipur strains, respectively. Immunisation with the Uruli-Kanchan strain gave less protection against heterologous challenge with the Jaipur strain and vice versa as some of the challenged calves showed slight swelling of the regional lymph node, two had fever, all exhibited a low-grade parasitaemia and four developed anaemia.

Animals↗
PubMed1978

Intimal changes in the coronary arteries of Indian water buffaloes (Bubalus bubalis).

Of 75 Indian water buffaloes (Bubalus bubalis) examined, 14 6-year-old or older buffaloes had early atherosclerotic lesions in the coronary arteries. These lesions resembled fatty streaks seen in man. Ageing changes and gross and microscopic features of the fatty streaks in the vessels resembled those described in the corresponding arteries of man.

Animals↗
PubMed1977

Effect of irradiation (gamma rays) on the biology of Eimeria tenella oocysts.

Effect of gamma rays on the biology of the progeny of the irradiated Eimeria tenella oocysts was investigated. The parent inoculum of sporulated oocysts was exposed to 5 to 60 kR (gamma rays). These oocysts were fed to chicks. The oocysts voided by the chicks were collected and sporulated. The sporulation rate, pathogenicity, immunogenicity and reproduction potential of these oocysts--the progeny of the irradiated oocysts--were compared with those of the unirradiated oocysts. It was observed that increase of irradiation dose caused progressive decrease in the pathogenicity of the oocyst suspension. The oocysts exposed to 30 and 40 kR produced only mild infections whereas those exposed to 50 kR and above, were noninfective. No difference in pathogenicity, immunogenicity and reproduction potential of unirradiated oocysts and the oocysts progeny of the irradiated oocysts, was seen. It was concluded, therefore, that the effect of irradiation was limited to the inoculum exposed to it, and was not transmissible to the progeny of the irradiated oocysts.

Animals↗
PubMed1976

Enzootic calcinosis in sheep: clinical signs and pathology.

Enzootic calcinosis in Corriedale sheep was characterized by degeneration and mineralization of elastic connective tissue of aorta, arteries, lung, and kidney and by ulceration of cartilage of joints of limbs. Results of serum chemical analysis revealed low Ca X P value and significantly low, but inconsistent magnesium concentration and normal inorganic phosphorus content. The Ca:P ratio in bone was low in affected sheep. Clinicopathologically, calcinosis of sheep at Mattewara, India, appeared to be similar to the disease described as Enteque seco in South America, Naalehu disease in Hawaii, Manchester wasting disease in Jamaica, and calcinosis in central Europe, Israel, and South Africa. The disease might be due to complex mineral imbalance, although the possibility of a plant poisoning has not been ruled out.

Animals↗
PubMed1976

Enzootic calcinosis in sheep: soil-plant-animal relationship.

Chemical compositions of soil, water, feeds, and forages on a farm where sheep were affected with calcinosis (experimental site) and a farm with sheep not affected with calcinosis (control site) were determined. The study lasted 1 year. It was observed that water from the experimental site had higher electrical conductivity and calcium level than from the control site. Higher conductivity indicated greater mineral content in the water. Soil from the experimental site had lower levels of potassium, nitrogen, and phosphorus and higher content of exchangeable calcium as compared with these values of the control site. Exchangeable Ca:Mg ratio for soil of the experiemntal site was twice greater than that of the control site. Forage plants of the experimental site had lower concentrations of nitrogen, phosphorus, calcium, magnesium, and copper, but higher values of potassium and sulfur. The K:Ca + Mg, K:P, and K:Ca ratios for plants from the experimental site were higher and Ca:P ratio was lower than those of the control site. Analysis of ruminal content of the affected sheep revealed higher K:Ca + Mg, K:P, and Ca:P ratios than those of the control sheep. Due to the close relationship of metabolism of calcium, phosphorus, potassium, and magnesium, evidence of the existance of their imbalances in feeds and forages of the affected farm possibly contributing to the causation of the pathologic calcification of soft tissues of the sheep has been presented.

Animal Feed↗