a nurse must check for blood return. prior to any administration of drug via implanted port it is crucial that nurse for any blood return. if there is no any blood return nurse should hold the drug until patency is obtained established again.
Hybrid inviability is when a hybrid animal is biologically unable to grow up to be a healthy mature adult. This condition results in isolation from hybrids and pure breeds.
Hybrid infertility is a conditio experienced by hybrid animals when they cannot reproduce. This prevents the spreading of the hyrbid species into uncontrollable populations.