Mastceller har visat sig vara viktiga celler i immunförsvaret bland annat vid infektioner med parasiter, bakterier och virus. Huvuddelen av mastcellsforskningen som kommit fram till detta har gjorts med däggdjur som modell- och måldjur. Många likheter finns mellan fåglars och däggdjurs immunsystem men några viktiga olikheter förekommer både anatomiskt, på cellnivå, receptornivå och molekylär nivå. Detta väcker frågor om mastcellerna har exakt samma funktion hos fåglar som de har hos däggdjur. Slemhinneskadorna som uppstår hos fåglar infekterade med de två virussjukdomarna Newcastlesjuka och Infektiös bursit har visat sig till stor del bero på mastcellsaktivering.

Denna rapport undersöker en frågeställning som kom upp efter virusutvecklingen som skedde 2004 med illasinnad kod som spreds mellan mobila enheter via Bluetooth. Rapporten undersöker vilka hot som finns om Smartphones och handdatorer sprider illasinnad kod via Bluetooth till datorbaserade system.Undersökningen som gjordes var en hermeneutisk explorativ undersökning. Sammanlagt gjordes tre intervjuer med experter inom områdena informationssäkerhet, mobila enheter och Bluetooth.Resultatet visade att illasinnad kod i Smartphones och handdatorer som sprids till datorbaserade system skulle kunna utgöra samma hot mot informationssäkerheten som traditionell illasinnad kod, det vill säga virus, maskar och trojaner som sprids mellan datorer. Därmed bör den illasinnade kod som rapporten behandlar betraktas lika allvarligt som traditionell illasinnad kod..

I dagens samhälle ställs det allt fler krav på att företag ska ta ett socialt ansvar och idén corporate social responsibility (CSR) påverkar företag och deras verksamhet. Ett totalt socialt ansvar innefattar att företag ska gå med ekonomisk vinst, följa lagar och förordningar som råder på marknaden samt en etisk skyldighet i form av agerande i enlighet med intressenters normer och förväntningar på företaget. Utöver detta ska företag agera som goda samhällsmedborgare. För företag i en bransch där verksamheten grundas på skadliga produkter blir det diskutabelt huruvida de lever upp till ett etiskt ansvar eller inte. Företag i tobaksbranschen är exempel på sådana och syftet med den här undersökningen är att analysera och jämföra fyra tobaksbolags respektive presentation av CSR.

Introduction: Although life expectancy had increased in Sweden for many decades and several health problems had diminished over time, there was no change in men's risk behaviour regarding for instance high alcohol and tobacco consumption. Many of the gender differences in health that existed in society explained were due to power structures and beliefs about behaviour based on gender; a social construction that resulted in the relatively high valuation of men with a more masculine behaviour. Aim: This literature review aimed to study and identify the scientific knowledge regarding paternity leave and its impact on men's health. Method: A literature- based study design was used and the material consisted of peer-reviewed articles from which six themes were identified: alcohol, tobacco, stress, isolation, social support and mortality risk. Results: Divided into three parts, the results described the socioeconomic background of the men who took paternity leave, as well as the impact of paternity leave and masculinity as an impact on men's health.

Blood-borne infectious diseases such as Human Immunodeficiency Virus (HIV)and Hepatitis C Virus (HCV) spread when the addicts share needles and injecting equipmentwithin contact networks. A quantitative cross-sectional study was conducted in Winnipeg,Canada in December 2003 - September 2004. Through a special questionnaire, respondentswere asked to answer questions about themselves and about their contacts, about relationshipsand how they shared syringes and other injection supplies. Blood tests were used to identifywhether they carried any blood-borne infectious diseases. We selected some variables from theoriginal data set.

Blood-borne infectious diseases such as Human Immunodeficiency Virus (HIV)and Hepatitis C Virus (HCV) spread when the addicts share needles and injecting equipmentwithin contact networks. A quantitative cross-sectional study was conducted in Winnipeg,Canada in December 2003 - September 2004. Through a special questionnaire, respondentswere asked to answer questions about themselves and about their contacts, about relationshipsand how they shared syringes and other injection supplies. Blood tests were used to identifywhether they carried any blood-borne infectious diseases. We selected some variables from theoriginal data set.

Cassava (Manihot esculenta Crantz) is a root crop that plays an important role in many households in Africa. It is sometimes called ?Africa´s food insurance?. The advantages with the crop are that cassava is drought-resistant and it can grow in a semi-dry land. It is a perennial crop and does not require much labor.

Bröstcancer/juvertumörer hör till de vanligast förekommande tumörsjukdomarna hos människa, hund och katt, men vad som orsakar uppkomsten av sjukdomen är till största delen okänt. Hos möss har man funnit ett virus ? MMTV ? som orsakande faktor. MMTV, Murine Mammary Tumor Virus, är ett retrovirus som kan verka som ett endogent virus eller som exogent agens med möjlighet att nedärvas till avkomman, bland annat via modersmjölk. Infektion sker via aktivering av B-celler, T-celler och andra lymfocyter som tar sig till juvervävnaden och infekterar denna.

My essay explores the public view on smoking in Sweden over the last few decades. I've studied how changes in social structures through media, laws, studies and education has brought about a change in the opinions about smoking. I found that even though there have always been different opinions on smoking it seems to have become less accepted in the Swedish society, particularly in the past twenty years. I discuss the different reason as to why (and how) the view on smoking might have changed the last decades amongst the Swedish people. To be able to do this I have done interviews on which I have applied narrative analysis..

The current legislation on marketing of tobacco products creates problems for Swedish Match, and obstruct its marketing communications. The purpose of this paper is to investigate Swedish Match's marketing strategy of product category snuff, through a special exposure. In store placement has a great affects on customer buying behavior and studies have shown that 70-80 percent of all purchasing decisions are made in the store, which in turn provides great opportunity for retailers to use their marketing tools for influencing customer buying decisions.Our thesis study is to test a double exposure of snuff with the help of three special exposure. These three special exposures are fridge, fridge with a sign and sign. The purpose of the study is to test which of these three special exposures that have the greatest impact on sales.

Feline infectious peritonitis (FIP) is a disease that can affect cats and is caused by a feline coronavirus (FCoV). FCoV is spread via the feacal-oral route and many cats are carriers of the virus. Despite that, very few of the carrier cats develop FIP. The explanation of this phenomenon is that the virus has to mutate to be able to cause FIP and in the majority of the carrier cats this mutation never occurs. FIP is very hard to diagnose because the symptoms are diffuse and a completely accurate diagnosis can almost exclusively be established during a postmortem necropsy.

Virala orsaker till reproduktionsstörningar så som abort, resorption av foster och dödfödda valpar är hos hundar ofullständigt kartlagda. Herpesvirus är det agens som har studerats mest och är även ett välkänt abortagens på andra djurslag, däribland häst. Hundens herpesvirus (CHV-1) orsakar hos vuxna individer i regel endast milda respiratoriska symptom. Hos dräktiga djur kan viruset ge upphov till förlust av valpar och även orsaka en kraftig och dödlig infektion hos neonatala valpar. Precis som många andra herpesvirus kan CHV-1 ge upphov till en latent infektion som kan reaktiveras vid stress.

Porcine circovirus type 2 (PCV2) is a common virus present in most parts of the world. PCV2 has been pointed out as the major causative agent to post weaning multisystemic wasting syndrome (PMWS) that affects pigs after weaning. The clinical symptoms of PMWS are impaired growth, diarrhoea, respiratory problems and increased mortality. At autopsy enlarged lymph nodes with depletion of lymphocytes are commonly found. Since 1991 PMWS has spread all over the world and was first described among Swedish pigs in 2003. Although PCV2 is widespread, only some pigs develop PCV2-related diseases. Why this is and what other factors that are required in order for the disease to develop is yet unknown. The main theories involve other infections, for example PRRS, and management issues but also genetic differences between pigs and/or virus strains have been suggested.

I dag kan man oftast läsa om olika säkerhetshot och risker en datoranvändare måste tänka på för att inte ge någon utomstående möjlighet att komma åt känslig och/eller privat information. Här talas det om nya virus och nya typer av trojaner som sprids som epidemier över Internet, och i bland handlar det om ett spionprogram som följer med en nedladdad fil. Det är svårt att hålla reda på alla typer av skadlig kod som nämns fast med ökad förståelse ökar också chanserna för att klara sig från smitta. Det har visat sig att utvecklingen av skadlig kod är lika stark som den inom kommersiella mjukvaror. Från persondatorns uppkomst i början av 80-talet och fram till i dag, har utveckling skett i alla områden av den skadliga kod det handlar om strategi, syfte och framförallt ren kodkomplexitet.Dagens ledande leverantör av operativsystem och webbläsare, Microsoft, lovar allt mer sofistikerade säkerhetslösningar varje gång en ny version av ett program släpps.

The Bovine respiratory syncytial virus (BRSV) causes bronchiolitis and interstitial pneumonia, predominantly in calves, and is a major cause of bovine respiratory disease worldwide. In humans, BRSV is paralleled by the closely related Human respiratory syncytial virus (HRSV), an important cause of respiratory disease, most severe in infants.The clinical signs and pathology during RSV infection is caused, not only by the direct effects of viral replication, but also by the response of the host immune system. The immunopathology of RSV has long obfuscated our understanding of the disease, and development of effective treatment and vaccines will be very difficult until greater knowledge is gained.One of the components of the immune system that has come into focus in RSV research the last few years, is the Toll-like receptor 4 (TLR4). The TLR4 receptor is well known as the receptor that binds lipopolysaccaride (LPS), and initiates the host response to bacterial infection. Recently, it has been shown that the fusion protein of RSV also interacts with, and up-regulates the expression of, the TLR4 receptor.