laxis are distinct clinical entities caused by transient plasma leakage from small blood vessels. When the affected vessels are superficial the result is a raised, itchy swelling of the skin known as a weal. Involvement of deeper vessels produces tender subcutaneous and submucosal swellings known as angio-oedema. Generalised plasma exudation leading to shock is a feature of anaphylaxis but also...

Three genes from the T(R) region of pTi15955 were introduced into tobacco (Nicotiana tabacum L.) to direct the synthesis of the mannityl opines from hexose sugars and glutamine or glutamate. Opines were present in all tissue types tested and accumulated to levels of 100 to 150 micrograms per milligram dry weight in root, stem, and leaf tissues. Opine-producing plants appeared normal with respec...

Introduction Conclusions References

The nature of the soil is shaped by presence roots and microbiota. Bacteria, archaea fungi profoundly alter plant growth and, in turn, depend on root exudation carbon-rich energy-yielding compounds. microbial communities act as facilitators processes secreting regulators, solubilizing minerals, providing N for growth, altering immune responses competing with pathogens. Characterizing engineerin...