| As basis of spiritual progress they emphasise a simple life of active love and service to the common wheal, in silence and without sensation. |
| Their bite produces a wheal on the skin that is intensely itchy, the itchiness being caused by the digestive juices of the chiggers. |
| These data confirm that with the micro-injection system, a wheal is not required for successful immunization. |
| The appearance of more than mild erythema or wheal constitutes a positive response. |
| The scratch site is inspected at 20 minutes for an urticarial wheal surrounded by erythema. |
| The long axis and the perpendicular of each wheal were measured and mean wheal size calculated. |
