many people with early stage lyme disease develop a distinctive circular rash at the site of the tick bite usually around 3 to 30 days after being bitten this is known as erythema migrans the rash is often described as looking like a bull s eye on a dart boardany people with early stage lyme disease develop a distinctive circular rash at the site of the tick bite usually around 3 to 30 days after being bitten this is known as erythema migrans the rash is often described as looking like a bull s eye on a dart board
For example, giberellins stimulate cell division in shoot apical meristem, causing the plant to grow taller. These hormones also cause cell elongation in intercalary meristem of grasses. Cytokinin and auxin are also important growth regulators.ateral meristem is called the vascular cambium in many of the plants in which it is found. Secondary growth gives a plant added stability that allows for the plant to grow taller. Lastly, some plants have intercalary meristem.
Shoot apical meristem maintenance: the art of a dynamic balance Cristel C. Carles and Jennifer C. Fletcher USDA/UC Berkeley, Plant Gene Expression Center, 800 Buchanan Street, Albany, CA 94710, USA The aerial structure of higher plants derives from cells at the tip of the stem, in the shoot apical meristem (SAM). Throughout the life of a plant, the SAM pro-duces stem tissues and lateral organs, and also regener-ates itself. For correct growth, the plant must maintain a constant ï¬ow of cells through the meristem, where the input of dividing pluripotent stem cells offsets the