Sprague-Dawley Male Rats

Achieving “The American Dream” is a great desire for all but rarely does it ever come true (website). Discrimination is a major theme in Of Mice and Men. Most of the characters are discriminated against for various reasons. Another major theme is male friendship. Friendships are symbiotic relationships, where people share their talents and qualities to help each other through life (website). An important additional theme is loneliness and companionship. Most of the characters are lonely for the reason of they are working on a ranch with no companionship. Steinbeck illustrates how the characters respond to discrimination, male friendship, as well as loneliness and companionship.

What is it like to be a barn rat? A barn rat is probably a term that you have never

(1989b) indicates that the originally-selected high dose level of 0.3 mg/kg-d was initiated and because “no observable effects were apparent after 10 weeks of exposure”, this dose was increased to 0.4 mg/kg throughout the remainder of the study. The mating period covered as long as two weeks. Because it is specified that both male and female rats were dosed before and during mating as well as through gestation, because the manuscript indicates that male and female rats were dosed 5 days per week prior to gestation, and that pregnant dams were dosed 7 days per week during gestation, it is assumed that male rats were dosed 5 days per week during gestation, as during the mating and pre-mating period. The range of durations in based on the unspecified duration of the mating period, indicated as one or two weeks. The duration of exposure for F0 male rats is 17 or 18 weeks (13 weeks premating, one or two weeks mating, three weeks’ gestation), administered 5 days

1. It is predicted that the experimental rats will have the higher thyroid weight per gram body weight. The suppression of thyroid hormone production will cause the thyroid to grow in size causing a goiter

Pubic Lice, also known as crab louse, or crabs; Latin Pthirus pubis are tiny parasitic blood-sucking wingless insects that infest the human genitals, causing itching and red spots. Pubic Lice usually spread through sexual contact and most common in adults. It can also spread by close personal contact or contact with articles such as clothing, bed linens, or towels that are infest with the parasite. There are some symptoms for both genders are intense itching in the genitals or anus, mild fever, or irritability. If it is left untreated, it can develop infections from scratching, skin change color, and scarring.

The subjects were Sprague-Dawley male rats. Their age is 150 days. The supplier is Harlan Sprague-Dawley. They are maintained on a 12:12 h light/dark cycle and are provided with ad libitum access to food.

In the current study, 40 Long-Evans male rats will be assessed in the back-test at approximately 23 and 30 days of age to determine the coping profile of each individual rat. After profiling is completed, 24 rats with the most representative coping profiles will be identified yielding three groups: 8 active copers, 8 passive copers, and 8 flexible copers. In week two, the rats will be trained to perform attentional set shifting tasks (AST) which requires them to dig for a food reward (fruit loops). The rats will have to discriminate between specific salient variables such odors and digging mediums to successfully complete the trial and obtain their food reward. The rats will progress from simple discrimination AST (e.g., from one smell to another)

Male Sprague-Dawley (SD) rats (weighing 280–300g) (n=90) ) from the animal laboratory of Shiraz University of Medical Sciences, Shiraz, were used for the experiments. Animals were provided standard laboratory rodent food and water ad libitum and were housed in a temperature-controlled environment of 23±2oC and a relative humidity of 45±10% on a 12-h light/12-h dark cycle. All animals did not get additional exercise and were allowed for normal activities in a cage with dimensions of 65×45×30 cm. There is no exercise protocol during the study period. Animal experiments were performed in accordance with the internationally accredited guidelines, and have been approved by the author’s institutional Animal Care and Use

Mark has done a case study, there are 12 rats that are to be chosen from to be put in three different cages, Mark chose three rats and that were randomly chosen to three different environment one rat stayed in the laboratory cage with the rest of the rats that were not chosen, one was sent to a cage that Mark refers to as the “enriched” environment cage the last was sent to the “impoverished” cage. The 12 rats and the one chosen rat in the laboratory cage have a large variety of space with food and water, the impoverished environment is a slightly smaller cage which is in its own environment isolated from the rest with large amount of food and water, also the enriched environment was like a mini vacation for rats with the large cage with tons

The study is based on research using two groups of mice, studied for 18 weeks, as one group drank water while another drank water with

Adult male Wistar rats with a body weight of 200 ± 40 g were used in the experimentation. The animals were kept in a standard animal cage under standard temperature and light exposure, and were exposed freely to water and food ad-libitum.

The diets were continued throughout gestation and lactation for the females after conception. Their results suggested that the rats receiving 2 % of the food additive BVO in their feed became completely infertile. At 1 % of BVO, the rats suffered impaired fertility, reduced maternal body weight and reduced litter sizes but no evidence of malformations. Besides, postnatal mortality was high at this dose and impaired growth was observed among the survivors. Another experiment that done by Munro et al. (1969) found that all rats had arrested testicular development, thyroid hyperplasia, fatty changes in the liver, myocarditis, renal tubular epithelial changes and reduced liver enzyme activities when fed with semi-purified diet containing 0, 0.5% or 2.5% of brominated cottonseed oil for 80

The brown rat (rattus norvegicus) is a small brown rodent that has bilateral symmetry which means it can be divided into halves. A full grown brown rat can be up to 10 inches long. It usually weighs 8.1 ounces. Brown rats are different than other rats because the top of their head is slanted, like a triangle, and their tail is shorter than their body. Brown rats have brown fur. Their stomachs are lighter brown or gray.

Male C57BL/6J mice (No. 11401300006402), weighing 20 ± 2 g, will be used for this experiment. 7-month old mice will be maintained in a room at 23 ± 2°C and a relative humidity of 50 ± 10%, with a natural light-dark cycle. Food (6 mg thiamine-HCl as the form of TPP) and water will be provided ad libitum. After acclimatization for 1 week, the mice will be divided into two groups (n = 10 in each group) based on dietary difference: the dietary TPP depletion group (no TPP added) and the dietary TPP supplementation group (6 mg thiamine-HCl/kg diet as the form of TPP). The supplementation level will be based on Nutrient Requirements of Laboratory Animals: Fourth Revised Edition, 1995 [1].

During the 1st 24 hours post SAP induction in the SD rats, we registered the general conditions of the SD rats as follow. In the control group (PBS injecting), the rats were totally looked well and no death or any abnormalities. Opposite of the SAP induced group were had different symptoms like piloerection, laziness, depression, lags in responses and breath shortness with 4 deaths of ten (40%) (Table1). Post Qingyi Decoction treated in well inducted ASP SD rats the general observation was improved to look well. Thus, the above-mentioned symptoms were disappeared with only one of ten SD rat’s death (10%) (Table 1) (p.value < 0.0001). As well as, the statistical difference between the morbidity rates